Fukuoka | Japan

Cut, Color, and Clarity These characteristics are graded on a scale from , with 0 as the highest grade. In , the French chemist Auguste Verneuil developed a process for producing synthetic sapphire crystals. They have perfectly formed crystals, without any distortions and are considered the purest of the pure of all diamonds.

Have you seen…

This is a written estimate of the retail replacement value of the diamond. Though there are various reports on the market from a number of different grading laboratories, the GIA is recognised as the original source for unbiased grading, and has established a reputation for accuracy, reliability and integrity.

Though a GIA certificate contains a lot of information, it is presented in an uncomplicated fashion, and is easy to interpret. Like most official documents, all GIA reports have security features to prove their authenticity. These include a hologram, security screen and micro-print lines. These features prevent reports from being forged or duplicated. The GIA set the standard for diamond grading and diamond certification, and today, almost all diamonds are graded using their methods, and following their certification processes.

Learn how to read a GIA diamond certificate of your newly purchased diamond. The GIA diamond certificate not only gives the exact certificate number, but the carat weight, diamond colour, cut grade, the diamonds level of fluorescence and much more. A unique certificate number e.

Round Brilliant Cut The carat weight of the diamond e. E The clarity of the diamond e. Keeping your precious jewelry clean. GIA Reports Gem Lab Reports diamond information engagement rings loose diamonds loose pink diamonds diamond tutorials loose diamonds natural colored diamonds. Should you buy a diamond without a GIA Report? A GIA Report backs up the claims of the seller regarding the diamond grade.

There's simply no reason to risk buying a "high grade" diamond without a GIA Report. When I say "high grade" that means top dollar diamonds in any particular range. If we are speaking of colorless diamonds, I'm talking about I color and better- SI2 clarity and better. Now, if it was a 1. But if you are talking about a lower grade, many times the cost of the GIA Lab Report represents too high a percentage of the potential selling cost. What about other reports?

The main danger is the representation of a diamond with a lesser report as equal to a diamond of the same grade issued by GIA.

Some sellers may suggest that grades issued by one of the main non GIA labs is simply "one off". That assumption overlooks the facts. Ethical dealers won't use any such formula.