European Gemological Laboratory and College of Gemology
Certification of Diamond, Tanzanite and Coloured stones
Diamond certificate (A4)
 Weight is indicated in carats, which is a unit equal to 0.20g.
 Shape is the general cut of a diamond. For example round, pear or rectangular etc.
 Clarity grade indicates the presence or absence of blemishes and inclusions.
 Colour of a diamond is normally graded on a scale of D to Z.
 Measurements are indicated in millimeters and include the length, width and depth.
 Proportions of a diamond affect its brilliance and dispersion.
 Fluorescence - the reaction to UV light is the presence or absence of fluorescence.
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