The traditional 4C information does not help you to separate a beautiful diamond from a diamond of inferior appearance. Three of the 4 C's, Color, Clarity and Carat weight have very little effect on the appearance of the diamond. These 3C’s determine the rarity of the diamond.
The 4th C' cut does affect the appearance, but it is not well defined and it ignores the light characteristics of the diamond material. Even so called "ideal cut" diamonds do not guarantee you great light performance.
GemEx is independent and objectively measures the light performance and allows you to compare it to every other diamond in the world. It is easiest and surest way to choose a diamond that you will be proud of for eternity.
GemEx invented the concept of measuring the light performance of diamonds, and patented the instrument that measures it. Others have tried to copy GemEx, but a reliable light performance measurement is nearly impossible without violating the GemEx patent. Only GemEx measures
each and every diamond, reviews and validates the results of every diamond, and then provides you, the consumer, a reliable Light Performance Report.
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GemEx provides the technology that measures each and every diamond for light performance. GemEx provides the expertise that verifies that the light performance data is valid and authentic. GemEx provides
the easy-to-read and understand GemEx Report that compares each diamond to all others in the world. GemEx provides the BrillianceScope Viewer that allows you to compare the light performance of any two diamonds side-by-side in the jewelry store. GemEx provides Live Report
which allows you (and your friends and family) to view the diamond anywhere in the world via the Internet. Insurance companies provide you with discounted insurance rates on diamonds that are archived on GemEx Live Report.
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When you purchase a diamond independently measured by GemEx for its Light Performance, you receive many benefits!