Terminology – Diamond Colour Table
Established according to the international rules of CIBJO (in French: Confédération Internationale de la Bijouterie, Joaillerie, Orfèvrerie des Diamants, Perles et Pierres)
| Current Terminology | Former Terminology | |
|---|---|---|
| Finest White + | D | River |
| Finest White | E | River |
| Fine White + | F | Top Wesselton |
| Fine White | G | Top Wesselton |
| White | H | Wesselton |
| Tinted White | I | Top Crystal |
| Tinted White | J | Crystal |
| Slightly Tinted | K | Top Cape |
| Slightly Tinted | L | Top Cape |
| Tinted | M-Z | From Cape to Yellow |
The coloured diamonds, otherwise referred to as ”fancy coloured diamonds" are not listed in the above table.
Diamond Purity Table
The purity of a diamond is to be examined and judged under tenfold magnification of an achromatic, aplanatic magnifying glass in normal light by a practiced specialist.
| IF Internally Flawless, Pure | “Loupe clean" diamond, absolutely transparent, free of inclusions and internal features. |
| VVS, (VVS1), (VVS2) | Very, very small inclusions, which for an expert, are very difficult to detect under 10x magnification. |
| VS, (VS1), (VS2) | Very small inclusions, which are difficult to for an expert to detect under 10x magnification. |
| SI | Small inclusions, easy to detect under 10x magnification, but are not visible to the naked eye. |
| I 1 (Piqué I) | Inclusions, which are immediately detectable under 10x magnification, but which do not impair the brilliance of the stone. |
| I 2 (Piqué II) | Larger and / or numerous inclusions, which can be clearly seen with the naked eye through the upper part of the stone and which only slightly impairs the brilliance. |
| I 3 (Piqué III) | Large and / or numerous inclusions, which are very easy to detect with the naked eye and which significantly impairs the brilliance. |
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