Diamond Certificates & Grading Reports, Certified Diamonds.

Girdle Thickness: This is probably the most neglected part by the consumer. A thick girdle adds to the weight of the diamond without adding to the brilliance or fire of the stone. It also makes a diamond setter's life miserable. On the other hand, a very thin girdle is susceptible to chipping and breaking.

Culet: It is the bottom tip of the diamond. The culet is not visible unless it is large, very large or extremely large. These three should be avoided. However nowadays minimal amounts of diamonds have these. They are mainly seen in old european cut diamonds.

Fluorescence: This is the diamonds reaction to ultra-violet light. Avoid diamonds with yellow or strong blue fluorescence. They make the higher color grade diamonds look milky or oily. Fluorescent diamonds have a very blurred brilliance. In lower grade diamonds they add value as it makes the stone look whiter than what is actually is.

Plot: A diamond plot can be compared to a map of a country. It is a diagram of the diamond with all the identification marks of the diamond. The flaws of the diamond are shown marked in such a way that if you view the diamond under magnification the flaws on the diagram will be placed at the same place on the diamond. This is the best way of identifying the diamond.

In the recent years there have been many innovations in the diamond industry. One of them is laser inscription. Laser inscriptions on diamond girdles make diamond identification very easy. A majority of gem labs inscribe the certificate number on the girdle. Thus the consumer can loupe the diamond girdle and always identify their diamond with the laser inscription. If you do not see your laser inscription then it is not your diamond. All of these factors ultimately enable the consumer to make the right decision in buying diamonds. For further information on different grading labs, please view our Diamond Labs web page.

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