Diamond Colour


What is a diamond colour? Diamond colour actually refers to the lack of it. In the case of colourless (or if some prefer the term white) diamonds, the less a diamond has colour the more valuable it is.
The colour of a diamond depends on impurities and chemicals found in diamonds and nitrogen is by far the most common impurity that is responsible for the yellow or brown colour of diamonds. Human eye cannot detect difference between different grades of colourless diamonds and specialised training and equipment is required to determine the colour in controlled lighting conditions.

Even G and H of near colourless are very hard to determine and are invisible to untrained eye. However the colour affects the value of the diamond. To ensure integrity of diamond certification and to avoid confusion we adhere to GIA colour grades. The GIA colour grades start from D and all the way to Z. Where D, E and F are colourless, G, H, I and J near colourless. I and J represent great value for money. IFFL does not recommend diamonds K to Z. There is a misconception that colour Z may be fancy yellow colour. This is not the case and fancy coloured diamonds are covered in another guide.