Information about the relation between the weight and the diameter of a diamond

Equivalence for round brilliant diamonds

Examples of different diamond measures

0,30 Ct

0,50 Ct

0,80 Ct

1,00 Ct

1,50 Ct

« 0.30 Carat » diamond

White degree from D to Z

« F » Colour diamond

Fluorescence is a luminous effect that some diamonds exhibit when exposed to ultraviolet light. They show visible light, usually blue.

Our recommandation

Since fluorescence may in some cases give a milky diamond appearance, prefer a diamond without fluorescence ("None" or "Nil")

« none » Fluorescence diamond

« EX » Cut diamond

IF

VVS 1

VVS 2

VS 1

VS 2

SI 1

SI 2

P1

P2

P3

« Si1 » Clarity diamond

The three major diamond certification laboratories HRD, IGI and GIA offer the option of laser engraving the certificate number on the girdle (circumference) of the diamond. This is a proof of the good match of the diamond and its certificate. The inscription is very small (to preserve the purity of the stone) and very difficult to read with the magnifying glass 10X. If you order only the diamond (without the jewel), it will be delivered under seal in a rigid plastic pouch (see photo below) for diamonds certified by HRD or by IGI. For GIA diamonds, the seal must be specifically requested in the comments field during the ordering process.