14K vs 18K Gold Core Differences

When pick gold jewelry, 14K and 18K gold are always the two most popular choices on the market. The biggest difference between 18K gold and 14K gold lies in their gold content. This simple gap in pure gold percentage brings out many changes, including color, hardness, how long they can last, price and skin reaction. All these factors make the two types of gold fit different wearing needs.

To put it in a easy way. 18K gold has more pure gold inside, so it looks more valuable. This material is a little soft, and the color is more vivid, especially the bright golden tone. But one small downside is that it gets scratched more easily after long use.

As for 14K gold, it contains less pure gold. It is much harder and stands wear and tear really well. Its price is also much friendly for ordinary buyers. That is why it becomes a great pick for jewelry you wear every single day. For most people’s daily rings and bracelets, 14K gold strikes a perfect balance between practical use and cost. If you love classic style, high-end feel and worry less about skin allergies, 18K gold will be your better traditional choice for fine jewelry.

A deeper look at the differences between 18K and 14K gold

1. Gold Content

This is the root of all the differences we talked about. People use the unit “Karat” (short for K) to mark gold purity.

24K gold means almost 100 percent pure gold. It is extremely soft, so craftsmen hardly use it to make wearable jewelry.

18K gold is mixed with eighteen parts pure gold out of twenty-four total parts, which equals to 75% gold content.

14K gold has fourteen parts pure gold, so the gold percentage is about 58.3%.

The rest parts are other metals like silver, copper, zinc and palladium. We call these mixed metals alloys. People add alloys into pure gold on purpose. These mixed metals can make gold harder, and also create different colors, such as white gold and rose gold.

Common gold types have different ratios. 22K gold has 91.7% gold, 10K gold only has 41.7% pure gold. The more extra metals added, the lower the gold purity will be.

2. Color

Both 14K and 18K gold can be made into yellow gold, white gold and rose gold. Still, you can tell small color differences because of their different gold content.

18K yellow gold owns a richer and deeper golden shade. It looks much closer to the color of full pure gold, thanks to its high gold percentage. 14K yellow gold looks a little pale in comparison, since more alloy metals are blended in.

When it comes to rose gold, makers can put more copper inside 18K gold. Copper gives out a reddish tone, so 18K rose gold shows a brighter and more obvious pink color.

White gold of both kinds needs a thin layer of rhodium plating on the surface to get that shiny silvery look. The base color of 18K white gold is a light yellow, while 14K white gold has a dull grayish base. After wearing for months or years, the rhodium layer will wear off little by little, and the original pale base color will show up. At this point, you need to re-plate rhodium to bring back its bright white shine. Both types have this problem, so there is no big gap here.

3. Hardness and Durability

This point is super important when you decide which one to buy.

14K gold is clearly tougher and more resistant to scratches. It has a large amount of alloy metals, which greatly improve its overall strength. It is the top choice for rings, bracelets and other jewelry worn daily. These pieces often hit hard things or rub against surfaces, and 14K gold will not bend or get damaged easily.

18K gold is softer by nature. If you wear it every day, scratches and wear marks will appear sooner. Even so, its soft feature has an advantage too. When setting gemstones, especially big diamonds, the soft metal prongs can wrap around stones more tightly. It holds gems firmly and lowers the risk of falling out.

4. Skin Allergies

Pure gold is one of the safest metals for human skin, it rarely causes allergies. Since 18K gold has a high gold content, the chance to get skin irritation is really low.

14K gold contains far more alloy metals. In the past, some alloys had nickel inside, which is a common allergy trigger. Though most brands stop using nickel now, a small number of people may still feel uncomfortable if their skin is sensitive to other mixed metals. Luckily, most people can wear 14K gold without any bad reactions.

5. Price

The price of gold jewelry mainly depends on pure gold value. So 18K gold always costs more than 14K gold. For two pieces of jewelry with the same weight and craft work, the one made of 18K gold will have a higher production cost and selling price.

How to make your final choice

If you value high gold purity and the luxurious feeling of jewelry, or your skin is easy to get allergic to metal products, go for 18K gold. It is also perfect for luxury ornaments, classic wedding rings and jewelry set with big main stones.

If you need jewelry for daily wear, which has to face frequent friction and bump, 14K gold is more suitable. It lets you get similar designs at a cheaper price. Some thin and complicated jewelry designs also need hard metal to keep the whole structure stable. What’s more, if you often do hand work, sports or other activities that may hurt your jewelry, 14K gold is the practical pick for you.