Established according to the international rules of CIBJO (in French: Confédération Internationale de la Bijouterie, Joaillerie, Orfèvrerie des Diamants, Perles et Pierres)
|Finest White +
|Fine White +
|From Cape to Yellow
The coloured diamonds, otherwise referred to as ”fancy coloured diamonds" are not listed in the above 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.
|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.