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.