How IGL Colour Grade Diamonds
IGL takes colour grading of your diamonds to the next level. Together with the “old-fashion” system of comparing diamonds against a master set of coloured diamonds, IGL also uses the modern DC3000 Mk2 colourimeter.
The DC3000 Mk2 colourimeter reads in the GIA grading scale and helps make the process faster and more efficient by eliminating the need for manual darkfield calibration.
Manufactured by the leader and innovator in diamond spectral analysis, the Gran diamond colourimeter uses full-spectrum analysis to colour grade loose and mounted diamonds from 0.25 to 10 carats.
On the GIA-Gem Trade Lab grading scale, the Gran Diamond colourimeter measures from D through fancy intense with an accuracy of ½ of a colour grade. It also indicates the tints and hues of the stone. Unaffected by fluorescence or phosphorescence, the colourimeter features a built-in 365 nm UV light source for fluorescence testing.