Some diamonds come with a GemEx Report, which measures an individual stone's light performance. Better light performance results in a more beautiful diamond.GemEx Systems is an independent laboratory that provides certification stating the measurement of the fire, sparkle and brilliance of your diamond, as shown on the chart provided with your diamond.How Is Light Performance Determined?GemEx ratings are determined by the use of BrillianceScope® Analyzers, which measure a diamond's:
How Do I Read My GemEx Certificate?
The GemEx certificate identifies your diamond and grades it against other diamonds with a similar shape. Each certificate includes:
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