Day: 25 June 2019

The 4 c’s of Diamonds – Part 2 of 5 – Colour

Diamond Colour Grading & Rarity Colour or absence of it, is a defining factor in diamond evaluation and one of the 4Cs GIA (Gemological Institute of America) included in each official diamond report. The GIA colour grading runs alphabetically from colourless ‘D’ diamonds (the purest) to ‘Z’ ones that contain the most chemical impurities, especially […]