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Diamond Inclusions: Cavity

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details

Does your diamond’s GIA certificate mark a cavity? Do you know what this kind of inclusion is? The word cavity means hole in English. Most cavities form when other surface flaws like knots or crystals fall off after the diamond gets hit. A small number of cavities also come from broken feathers, which create sharp openings on the stone. It looks just like a tooth with cavities. The bigger the cavity is, the worse the diamond looks visually. For this reason, we do not suggest buying any diamond that has a cavity inclusion.

Gem experts have studied this issue for years, and they find cavities can appear anywhere on a diamond. Some buyers think diamonds with cavities on the girdle or edges are okay to buy. They believe the prongs of the ring setting will cover the cavity after mounting, so no one will notice the flaw. This idea sound reasonable, but it has hidden risks. As you wear the diamond longer, accidental knocks can make the edge cavity bigger and bigger. It will finally lower the overall quality of the stone.

Diamonds with cavities on the table are even less recommended. A large hole on the top surface will directly hurt the diamond’s fire and brilliance. Diamonds have a nature to attract oil and repel water. When you wear it daily, cosmetics and oily substances will stick to the stone easily. These oils catch dust very fast. Over time, dirt builds up inside the cavity, and it will look like a dark spot. This dark mark seriously ruins the diamond’s sparkle.

Recently, one follower send me two diamonds and ask me to help choose between them. I checked their GIA certificates carefully and found both stones have cavity inclusions. So I told this person to look for other options instead. There are countless diamonds on the market. If you compare more choices, you will definitely find a much better one without such obvious flaws.

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Styles of Blue Nile Diamond Rings

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
Diamond rings stand for love. They are a vital part of wedding ceremonies. Picking a right diamond matters a lot, yet the band design also carries huge weight. A ring band does not only hold the diamond in place, it also shows the wearer’s unique personality and charm. Many buyers wonder, what are the common diamond ring styles sold at Blue Nile?

Simple Prong Styles: Six-prong & Four-prong

Simple designs create timeless classics. Six-prong and four-prong diamond ring styles have existed for hundreds of years. The iconic six-prong design has a history of nearly one hundred years. It is everlasting, minimal and can stand the test of time. The most famous examples include Tiffany’s classic six-prong ring, Cartier’s iconic four-prong bullhead style, and the HW ring from Harry Winston. Blue Nile also provides a wide range of six-prong and four-prong band options, and they look really nice when worn. Two typical choices are Petite Hidden Halo Solitaire and Classic Six-Prong Solitaire.
Petite Three Round Diamond Accents Side Stone Engagement Ring In 14K Yellow Gold By James Allen

Bands With Side Pave Diamonds

If you think a plain band looks empty and lack decorations, you can add small side diamonds. The whole ring will then shine brightly, just like many little stars surrounding a bright full moon. Blue Nile has lots of choices in this category, such as Scalloped Pavé Diamond Engagement Ring and French Pavé Diamond Engagement Ring in Platinum (1/4 ct. tw). Some customers say this style catch eyes much easier than plain single stone rings. Small diamonds along the band add soft sparkles when hands move.

Halo Cluster Setting Styles

Do you want your main diamond to looks bigger and more outstanding? Or you hope your ring delivers a luxurious vibe? Then cluster halo styles will be your great pick. These designs are gorgeous without being too flashy. Lots of tiny surrounding diamonds wrap around the center stone, and this craft ask for high standard in stone setting. Blue Nile offers multiple halo cluster rings, including French Pavé Diamond Halo Engagement Ring in Platinum (1/2 ct. tw) and Blue Nile Studio Heiress Halo Diamond Engagement Ring in Platinum (3/8 ct. tw). The layered small stones reflect light from all angles, which greatly improve the visual size of center diamond. Many people on review sites say this is the best budget way to get a big-looking ring without buying an expensive large main stone.
French Pavé Diamond Halo Engagement Ring in Platinum

Bands With Colored Gemstones

Lots of customers choose bands set with other gemstones mainly to show their personal taste. Rubies and sapphires paired with white diamonds create a extra luxurious and beautiful effect. The contrast between colorful stones and clear diamonds makes the ring one-of-a-kind. One representative item at Blue Nile is Round Blue Sapphire Three Stone Engagement Ring In Platinum By James Allen. These colored stone styles fit people who dislike plain all-diamond designs. Weddings with vintage or romantic themes match these rings perfectly.
Round Blue Sapphire Three Stone Engagement Ring In Platinum By James Allen
Side note: Many buyers feel confused and ask why some ring bands on Blue Nile belong to James Allen. The reason is that Blue Nile and James Allen merged together in the first half year of 2026. Their design resources and product lines are fully combined now, so shoppers can find James Allen exclusive styles directly on Blue Nile’s official website. The merge also bring more design choices for customers, and the price policy keep steady without sharp rises.

Fancy Shaped Diamond Rings

Classic Pear Shaped Diamond Engagement Ring in Platinum
Nowadays, more and more people fall in love with fancy cut diamonds. Fancy diamonds do not have the neat balanced proportion of round brilliant diamonds, so most fancy diamond rings need custom mold making during production. If you chase unique look and hate wearing the same ring as everyone else, fancy shaped diamond styles suit you well. Blue Nile stocks many related products, like Petite Three Round Diamond Accents Side Stone Engagement Ring In 14K Yellow Gold By James Allen, Classic Pear Shaped Diamond Engagement Ring in Platinum (1/2 ct. tw), and Pavé Diamond Halo Engagement Ring In 14K Yellow Gold (Oval) By James Allen. Oval, pear, emerald and cushion cuts are all available. Each shape carry different meanings, pear shapes stand for pure love while oval shapes symbolize lasting happiness. Custom sizes and metal material swaps are also supported for these fancy cut rings.
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Diamond 101 Others

What is the price of a one carat diamond?

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details

What is the price of a one carat diamond?

When people hear the word diamond, they will easily think of wealthy ladies and socialites wearing big diamonds with many carats. Many people also wonder, how much does a one-carat diamond cost exactly?
First of all, let’s talk about carat. Carat is the standard weight unit for all kinds of gemstones and jewelry. One carat equals 0.2 grams, which is one fifth of a gram. To make it easier for people to tell the size of small diamonds, people divide one full carat into 100 points. That means a 50-point diamond is just 0.5 carats, and a 100-point diamond is exactly one carat. This counting way is widely used in the diamond market every day.
Now back to the main question: how much is a 1-carat diamond?
The price of a diamond is mainly decided by the famous 4C grading system. For diamonds with the same carat weight, their prices can be totally different because of different color, clarity, cut, symmetry and polish grades. Besides these basic factors, some extra features also change the price a lot. For example, diamonds with or without fluorescence will have big price gaps. Some diamonds have natural flaws like milky tint, coffee tint or green tint, and these problems will also make the price go down. So there is no single fixed answer to the price of one carat diamond.
A low-quality 1-carat diamond may cost around 3000 US dollar. If the diamond has good overall quality, its price can reach tens of thousands of US dollars. When it comes to high-quality colored diamonds, the price is even more amazing. A nice colored diamond can cost hundreds of thousands or even millions of US dollars.
Brand is another factor that affects diamond prices. Luxury brands sell their diamonds at a much higher price than regular diamond sellers. Most of the extra money here is just the brand premium, not the real value of the diamond itself. If you want to buy a cost-effective diamond ring, custom diamond rings are a great choice. There are many reliable online stores in this field. Bluenile, Jameallen, Whiteflash and Rarecarat all have good reputations among buyers. Jameallen has now merged into Bluenile and become part of Bluenile’s product line.
To sum up, the higher the color and clarity grades are, the more expensive the diamond will be. Never judge a diamond’s value only by its carat size. A diamond’s final price is affected by many different parameters together. When you plan to buy a diamond, you need to take all these factors into consideration carefully.
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Guide to GIA Diamond Certificates

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
GIA is short for the Gemological Institute of America. It is a non-profit jewelry appraisal organization based in the United States. Founded in 1931, it has developed for more than 80 years. Now it has set up many branches around the world, and it has become the benchmark for diamond grading. Many people come into contact with GIA diamond certificates for the first time, and they do not know what the items on the certificate stand for. Today we will make a clear explaination about the GIA diamond certificate.

Understanding GIA Diamond Certificates

GIA has two main types of diamond certificates: full certificate and small certificate. The full certificate is used for colored diamonds and large carat diamonds. The small certificate is applied to diamonds weighing less than one carat. The biggest difference between them is that the full certificate prints a diagram showing the distribution of inclusions inside the diamond, and its size is also larger. Every diamond has unique inclusions in different shapes and positions, so this diagram can well prove that each diamond is one of a kind. We take round diamonds as an example to explain the details of the certificate. One important point you need to know: GIA will not give cut grades for fancy shaped diamonds.

GIA Diamond Certificate

The left side of the certificate lists key information from top to bottom.

Issue Date: September 01, 2017

GIA Report Number: 6265698118

Shape and Cutting Style: Round Brilliant

Measurements: 5.41 – 5.43 x 3.33 mm

Carat Weight: 0.60 carat

Color Grade: H

Clarity Grade: VS1

Cut Grade: Excellent

Polish: Excellent

Symmetry: Excellent

Fluorescence: None

Clarity Characteristics: Needle, Pinpoint

On the right part of the certificate, you can also see the same GIA report number. This number matches the laser engraving on the diamond’s girdle. There is also a proportion diagram of diamond cutting parameters, grading notes and anti-counterfeit codes. A QR code is attached here too. You can scan the code or visit the official GIA website to check all detailed information of this diamond.
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Others

Pear Diamond

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
As one of the most popular fancy shaped diamonds, pear shaped diamond is getting more and more popular among jewellery lovers all over the world these years. Lots of people choose it as their engagement stone for two simple reasons. First of all, pear diamonds always look bigger in visual size comparing with round brilliant diamonds with the same carat weight. Second, once you wear a pear diamond ring on your finger, it can stretch your finger line and make your hands look slimmer and more elegant. For a standard one-carat pear diamond, its length can reach around nine millimeters, and its width is about five millimeters, this data is a basic reference for new buyers who do not know much about diamond dimension.
If you take out a pear diamond and watch it carefully under soft light, you will see its special outline clearly. One end of the stone forms a smooth half circle, and the other end tapers down to a thin, sharp point. The whole shape looks just like a drop of water falling from the sky, or a single teardrop roll down from someone’s cheek. That is why many people also call it teardrop diamond in daily talk. Anyone who keep an eye on high fashion fine jewelry must have stepped into the boutique of Chaumet before. The brand’s diamond rings fully show the outstanding sparkle and brilliance of pear shaped stones, and they do it better than most luxury jewellery brands. The rings from their Joséphine Aigrette collection have already become timeless classics that represent a whole fashion era. Countless celebrities and royal families pick this series for their important life moments, and this push pear diamonds to become even more trendy in recent market.
There are many world-famous pear shaped diamonds recorded in jewellery history books, and two of them are the most well-known to the public. The first one is the Cullinan Diamond, which weights more than five hundred carats at its rough state. After professional cutting work, this pear diamond owns seventy-four facets in total. People mount this precious stone on the royal scepter of British monarch, and it still stay there as a priceless national treasure up to today. Another legendary pear diamond is the Taylor-Burton Diamond, with an original weight of 69.42 carats. Its first famous owner was Elizabeth Taylor, a super movie star with huge fame in last century. Later, a man named Robert bought this diamond from the previous holder. He sent the stone back to diamond craftsmen for re-cutting, trimming and polishing to fix its uneven surface and boost its light performance. After the rework process finished, the weight of this pear diamond drop to roughly 68 carats, but its fire and clarity got a huge upgrade.

pear diamond

The Ideal Proportion Range for Perfect Pear Shaped Diamonds

Different from round diamonds, fancy shape diamonds like pear do not receive an official cut grade on standard GIA diamond certificates. Gem lab workers can only sum up years of testing experience and sum out a ideal parameter range for pear stones, to help customers pick well-cut pieces with good light return.
The length-to-width ratio is the most important index for pear diamonds. The perfect range stands between 1.5 and 1.7. Stones inside this interval can release the best fire and brightness when light pass through the facets. If the ratio go above 1.7, the pear diamond will turn too slim and long, the half-circle end will look small and unbalanced. If the ratio fall below 1.5, the stone become too short and compact, lose the elegant teardrop feature that pear diamond famous for.
Other key proportions have fixed suitable ranges too. The table width ratio should stay 56% to 60% of the whole stone width. The total depth ratio need to keep between 59% and 62%. For the girdle thickness, medium thickness is the most friendly choice for daily wear; stones with thin or slightly thick girdle are also acceptable, with or without extra girdle facets both work fine.
I will always suggest every buyer check the real diamond in person before pay the bill. You need to avoid pear diamonds with heavy bow-tie effect. The dark bow tie shadow in the center will block light reflection and make the stone look dim and lifeless. Numbers on the certificate can only tell you basic data, you can not picture the actual shining look of a diamond just by reading those parameters. The online diamond retailer Blue Nile shoot high-definition video for every single diamond they sell on their website. When you feel confused and cannot make a final decision between several stones, you can enter their online zoom room to watch each diamond’s live video, rotate the stone and check its light performance from all angles. This online service greatly lower the risk of buying a unsatisfactory pear diamond without seeing real items offline.
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Oval diamond

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
There are many different kinds of fancy shape diamonds. Among all these styles, oval cut diamonds are one of the most popular picks for most people. From ancient times all the way to the modern day, lots of celebrities, nobles and high-ranking officials love to wear oval diamonds on their fingers or as pendants. Just like other fancy cut diamonds on the market, an oval diamond with identical clarity, color and carat grade will always carry a lower price tag compared to a standard round brilliant diamond.
One big reason for this price gap is the stone retention rate during the cutting process. When craftsmen cut an oval shape from rough diamond ore, more than fifty percent of the original rough stone can be kept and made into the finished gem. This retention number is much higher than round diamonds of the same carat weight. For this reason, oval cuts are perfect choice for long, rectangular rough diamond crystals that cannot be shaped into perfect round stones without wasting too much valuable material.
The oval cut diamond did not appear out of nowhere. It build upon the classic cutting framework of traditional round brilliant diamonds. Gem cutters kept adjusting, upgrading and optimizing its facet layout year after year, and finally turned it into the modified brilliant cut oval diamond we know and love today. A standard oval diamond features a total of 69 polished facets on its surface. The most ideal golden length-to-width ratio stands at 1.5. To put it simply, the best visual effect comes when the stone’s length is one and a half times its width.
If the length-width ratio go over 1.5, a dark shadow zone will show up right in the center of the diamond when you look at it from the top. This dark patch greatly weaken the diamond’s fire and sparkle, making the gem look dull and lifeless. On the other hand, if the ratio drop below 1.5, the oval will look nothing more than an elongated round diamond, losing its unique elegant outline. But if the cutter hits the perfect proportion range, the fire and light performance of an oval diamond can nearly match that of a top-tier round brilliant. It can catch every ray of light and easily draw every viewer’s attention at first glance.

Oval diamond ring

Standards for Perfect Cut Oval Diamonds

The table percentage of a well-cut oval diamond should fall between 53.0% and 61.5%. The total depth percentage needs to stay within the range of 59.0% to 63.0%. As for the length to width proportion, the acceptable standard interval is from 1.33 to 1.66. When it comes to the girdle, the ideal thickness range is thin to slightly thick. A girdle that is too thin will bring higher risk of chipping during daily wear, while an overly thick girdle wastes carat weight without boosting beauty. Only the thin to slightly thick girdle balance durability and visual attractiveness best.

Symbolic Meaning of Oval Cut Diamonds

An oval diamond owns a soft, gentle outline while still holding a strong sense of unique individuality at the same time. It is the ideal gemstone for people who have clear personal thoughts and dare to turn their plans into real actions. Many people from European and American countries notice that the oval shape looks just like an egg. For this cultural reason, oval diamonds carry the symbolic meaning of endless cycle of life and endless vitality. It stands for constant growth, new possibilities and lasting energy that never fades away.
From the perspective of astrology, oval diamonds suit people born under Aries and Capricorn star signs very well. The traits of these two signs match the energy of oval cuts perfectly. Capricorn people are famous for their persistent, tough and unyielding personalities, never giving up when facing difficulties. Aries people are straightforward, warm and kind, always speaking their true mind without hidden tricks. Both personalities fit the temperament that oval diamonds represent.
Besides its rich symbolic value, the special curved oval shape also brings great advantages when worn on hands. Its stretched outline visually stretch the fingers, making the whole hand look slimmer and more slender. For people with shorter fingers or thicker knuckles, oval diamond rings are a wonderful option to create a more graceful hand silhouette in daily life. Even for those with long fingers, oval diamonds can add extra elegant charm that round cuts cannot provide. No matter set in solitaire designs or paired with side accent stones, oval diamonds always deliver a delicate, eye-catching look on any wearer’s hand.
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Ady An shows off her 10.57-carat diamond ring

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
On six o’clock in the afternoon, June 23th, 2017, Ady An and Chen Ronglian held their wedding banquet at Mandarin Oriental Hotel in Taiwan. At the whole wedding party, the couple show their deep love to each other all the time, and lots of relatives and friends who live in Taipei come to the hotel to send their warm wishes for the new pair. Many famous celebrities also take time out of their busy schedules to attend this romantic big day, including Gary Chaw and his wife, Ariel Lin, Richie Jen, Michelle Chen, Barbie Hsu and her husband, Dee Hsu with her spouse and many other well-known stars.
 
The venue was decorated with soft warm lights and fresh flowers everywhere, create a sweet and romantic atmosphere for every guest here. All the people in the hall can feel the happy and joyful air spread all over the place. When Ady An walk into the banquet hall, all eyes immediately lock on her figure. She wear a gorgeous red backless gown that fits her body perfectly, the bright red color match the wedding theme very well and make her look elegant and charming.

Ady An shows off her huge 10.57 carat diamond ring

During the interview with reporters at the scene, Ady An speak highly of her husband without hiding her love. She can not stop praise how thoughtful and kind Chen Ronglian is in daily life. The most eye-catching thing on her hand is a huge diamond ring with 10.57 carats, it shine brightly under all the spotlights and catch every guest’s attention at once. Ady An share the special meaning behind this special number 10.57 to everyone. She said the pronunciation of these numbers sound like a sweet sentence in Chinese, which mean “totally perfect, my wife”. This secret romantic hint prepared by her husband touch her heart deeply.

Many guests stand up and clap their hands loudly after hearing this touching story. All celebrities and relatives raise their wine glasses to toast the newlyweds. Everyone send their sincere blessing to Ady An and Chen Ronglian. We all hope they can live a peaceful, sweet and happy life after marriage. Wish them get a lovely baby soon and build a warm little family full of laughter every single day. Every people who watch the wedding photos and news online also feel touched by their sincere love story, and we all wait to hear good news about their baby in the future.

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Fancy-shaped diamonds

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
From the previous article, we learn that diamond quality is mainly affected by the 4Cs, including clarity, cut grade, carat weight and color grade. Among these four factors, cut is regarded as the most important one to decide a diamond’s quality. This conclusion is mainly for round brilliant diamonds, and it does not apply to fancy color diamonds and fancy shaped diamonds.
Nowadays, people pursue more personalized styles, so round diamonds are no longer the only choice. Round diamonds take up about 75 percent of total diamond sales, and the rest market is occupied by fancy shapes. You may wonder what common fancy diamond shapes there are. They include marquise, oval, heart, pear, princess, emerald, triangle, cushion, radiant and asscher cuts.
Most people are familiar with round diamonds. A standard round diamond has 58 facets, while some are designed with 66 or 81 facets. Exquisite cutting skills and perfect symmetry can fully show the brilliant sparkle of a diamond. As for fancy shaped diamonds, you can roughly imagine their looks just from their names. Here is a simple introduction to each classic shape.
The marquise diamond gets its name for its eye-like shape. It is wider in the middle and narrow at both ends. This shape can gather light entering the stone well, so it has nice fire. Besides, it makes good use of the diamond’s weight, so a marquise diamond always looks larger than its actual carat.
Oval diamond is another popular shape. The best length-to-width ratio is 1.5 to 1. It is a great choice for ladies with small or short fingers, as it can make fingers look slimmer. In Western countries, it is favored by people who are creative and have unique tastes.

Fancy-shaped diamonds

Heart shaped diamonds first appeared in ancient India. A standard heart diamond has 63 facets. Its ideal depth ratio is between 59% and 63%, with a 1:1 length-width ratio. Cutting a heart diamond requires extremely high skills from craftsmen.
Pear diamond looks just like a pear, and people also call it teardrop diamond. If you look carefully, you will find it combines the features of marquise and oval cuts. It is widely used for earrings and suits young ladies with a delicate figure.
Princess cut is very common too. It looks like a square covered with many facets, and it normally has 57 to 58 facets. This shape matches ladies who have steady and elegant temperaments.
Emerald cut diamond is in a rectangular form with cut corners, just like a stepped ladder. It can keep more weight from the rough stone. Its ideal length-width ratio ranges from 1.3 to 1.4. Even though it is not as shiny as round diamonds, its pavilion can create special light effects that other shapes cannot match.
Radiant cut is a square or rectangular diamond. It mixes the cutting styles of emerald and round brilliant, so people name it radiant brilliant cut. It is popular among fashion lovers.
Triangular cut diamonds are usually made from flat rough stones. A standard triangle diamond keeps a 1:1 ratio, which helps it gain better brilliance.
When talking about Asscher cut diamonds, many people will think of Queen Elizabeth, who loved wearing this style a lot. Many people mix up Asscher cut and emerald cut. The biggest difference is that Asscher cut is square shaped.
Cushion cut has a classic and vintage style. It owns the advantages of both princess cut and round cut. It is often matched with small accent diamonds to make luxurious jewelry designs.

Why cut diamonds into fancy shapes?

Before cutting a rough diamond, jewelry analysts need to do detailed research. They mainly focus on two key points: getting the highest return on investment and ensuring good sales volume. Careful analysis before cutting is the key to maximum profits. Analysts also need to take other factors into consideration, such as color retention, weight retention, the original shape of the rough stone and the position of inclusions.
There is a famous saying that diamonds are a girl’s best friend. Everyone wants to buy a high-quality diamond at a reasonable price, so it is wise to pick diamonds with Excellent cut grade. James Allen has now merged with Blue Nile. These two brands own a huge inventory of loose diamonds and update the information all the time. If you take time to select carefully, you will definitely find your ideal fancy shaped diamond.

regular shaped diamonds

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Dimensions of loose 0.7 carat diamond

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details

I found out recently there are way more customers come to ask about diamonds at around 0.7 carat. Many people got one big question in mind. How big is a 0.7 carat diamond actually? If we set it with a setting that make the stone look bigger, can it show the visual effect same as a one carat diamond ring? Almost everyone who know a little about jewelry know this truth. For diamonds with identical color, clarity and cut grades, a 1 carat diamond cost far more expensive than a 0.7 carat one. The main reason is the carat premium in diamond market. Then here come another doubt. Is a 0.7 carat stone much smaller than one full carat in real sight? Let us take a look at a diamond size comparison picture I prepared below.

Dimensions of loose 0.7 carat diamond

We can clearly tell from that picture. Under ideal perfect cut standard, a 0.7 carat round brilliant diamond has a surface diameter of 5.8 millimeters. On the other side, a standard 1 carat round diamond reach 6.5 millimeters across its top face. The physical gap between these two sizes is really tiny, almost hard to notice with bare eyes. But if you match your 0.7 carat center stone with a well-designed halo or wide open setting which enlarge the stone visually, the whole ring might even looks larger than an original 1 carat diamond ring when people glance at it casually. Just like full one carat diamonds, most qualified 0.7 carat stones will come with international authoritative certificates such as GIA report. Every certified diamond has a unique matching GIA certificate number laser engraved on its girdle edge, so buyers can check the stone identity easily later.
Lots of shoppers have shared same experience with me many times. They walk into some local jewelry store and spot a 0.7 carat diamond there. The store used a simple six-prong mounting for it. Strangely enough, that diamond ring look visibly bigger than the 1 carat rings placed next to it on the display counter. Most buyers will get excited right away when they see such scene. They think they found a super good bargain with huge value. They start wonder should they pay the bill and take the ring home without second thought. Here Ijadiamond give all buyers an important warning, you better stay away from those tricky diamond rings without careful inspection first. Some dishonest merchants use low-quality cut diamonds to cheat ordinary customers, and sell them at high price same as well-cut stones. Those bad-cut 0.7 carat diamonds have an abnormal wide diameter much bigger than official standard data, but their total carat weight still stay fixed at 0.7 carat. To gain a wider table surface, the diamond cutter will make the stone’s pavilion depth extremely shallow. This type of poor cut grade diamond will totally ruin the stone’s light performance and fire. The overall outline of such diamonds just like a flying saucer. People in trade also name them flying saucer diamonds. Do not rush to make purchase decision in such situation. You will lose more money than you save in the end, and the ring will look dull and lifeless forever.

How much money do people need to spend on a 0.7 carat diamond?

Four C standards are the core factors that control all diamond pricing. The four C items include carat weight, color grade, clarity grade and cut grade. If color, clarity or cut grade shift even slightly, the total price of a 0.7 carat diamond can create a massive price gap between different stones. Right now, people can search for 4,349 perfectly cut round 0.7 carat diamonds on the Blue Nile official website. Their price range fall between 11,000 Hong Kong Dollars and 46,800 Hong Kong Dollars. On James Allen’s online platform, there are around 2,956 ideal cut round 0.7 carat diamonds available for selection. Their price start from 10,200 Hong Kong Dollars up to 45,900 Hong Kong Dollars. Online diamond retailers have much lower running cost compare to offline physical jewelry shops. Physical stores need to cover monthly store rent, employee salary, in-store display maintenance and many other daily overhead expenses. Without those heavy extra cost burdens, online diamond shops can offer much friendlier and cheaper price tags for same quality diamonds to all buyers.
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5 Ways to Enlarge Diamond Visual Effect

All Blue Nile diamonds are worth buying? 1，Both milky tint and brown hue:Tap to see full diamond info 2，The diamond has milkiness:Click to view detailed diamond information 3，The diamond has medium green fluorescence.:View diamond details 4，The diamond has a cavity:See the diamond details
Everyone wants to spend the least money to buy the biggest diamond possible. But what can you do to make your diamond look larger and more prominent when you only have a tight budget? Today, James Allen, a famous online custom ring website, which merged into Blue Nile back in 2026, share five practical tricks to make any diamond appear bigger. If you haven’t customized your diamond ring yet, you should read and learn these useful tips right now.
Trick one works best if you have not picked your main stone yet and plan to get a fancy shaped diamond. You can pick thin and elongated diamond cuts, such as marquise, pear and emerald diamonds. When they hold the same carat weight, they always looks much bigger than standard round brilliant diamonds to naked eyes. If round diamonds are your top pick, you better choose stones with ideal perfect cutting work. Cut is one of the four most important C’s of diamonds, and the quality of cutting decide how sparkly a diamond can be. Well-cut stones can reflect more light inside and out, release bright colorful fire flashes all over the surface. This extra shine create a visual trick that make your diamond seem larger and brighter at first glance. Many new buyers ignore cutting grades, and they end up with dull small-looking stones even with decent carat weight, so this step is really not something you can skip easily.
Trick two focus on your ring setting after you have already chosen your main diamond. You should go for halo custom ring designs. Small side accent stones around the center stone create a strong contrast effect that enlarge the whole look of your diamond ring. A classic halo style looks just like a sunflower with countless tiny stones around the core, it glows with endless shining light wherever you move your hand. Even a thin simple halo band without heavy metal frames can lift up the visual size of your main stone a lot, many jewelry sellers recommend halo settings for clients with limited spending budget for this exact reason.

5 Ways to Enlarge Diamond Visual Effect

Trick three tells you to pick white silver-toned metal for your whole ring band, like 18k white gold or pure platinum metal. Silver white metals act like small mirrors under and around your diamond, they bounce light straight back onto the main stone and visually stretch its outline to look bigger. Some people love warm metal tones like rose gold or yellow gold though, and there is a easy fix for this preference. You can keep the main band rose or yellow gold, but make all the stone prongs that hold your center diamond white silver colored. The white prongs frame the diamond clearly, stop warm metal tones from covering its shine, and keep the stone large and glowing all the time.

5 ways to Make Your Diamond Ring Look LargerTrick four is about your band width and extra side stones. Narrow thin band shanks are a great choice, or you can add a few tiny accent stones spread along the ring band. The slim metal part take less space on your finger, it will not compete for attention with your main diamond. When the thin band and small side stones work together to set off the center stone, they match perfectly and make your diamond stand out way more on your hand. People’s eyes will fall straight onto your main gem instead of the band, so the diamond naturally looks bigger and more eye-catching to anyone who sees it.

Make Your Diamond Ring Look Larger

Trick five suggest you pick ring designs with wide, eye-catching overall settings. Popular choices include snowflake style rings and Cartier’s classic bullhead ring designs. The large detailed metal frames around the center stone draw people’s sight directly to your diamond and add extra volume to the whole ring. Nowadays, custom made diamond rings become really easy to order online or in local jewelry shops. You can design one-of-a-kind rings fully based on your own likes, budget and hand shape. Both ready-made large setting styles and fully personalized custom rings are wonderful options if you want your diamond to show a bigger visual effect without paying extra money for higher carat weight stones.
Lots of ring shoppers waste money buying heavier carat diamonds without knowing these five simple tips. With clever choices on diamond shape, cut, metal tone, band width and ring setting style, you can own a diamond ring that looks far larger than its real carat size, without breaking your original budget. These easy tricks do not require complex professional knowledge, anyone who plans to buy custom diamond jewelry can put them into practice when shopping for their ideal engagement or daily wear diamond ring.