The colour of a diamond is important. The only real way of determining the exact colour of a diamond is to place it next to another diamond which has previously been graded. International standards have been established for grading diamonds according to extremely subtle differences in colour. Rare coloured diamonds. Certain natural coloured diamonds are very famous.
Coloured diamonds form a separate, rare and extremely valuable category of diamonds.
They come in all colours - pink, blue, brown, green and even black. More common are the golden or canary yellow colours. It is to be seen in the Cond'e Museum in Chantilly, near Paris. It is cut as a cushion-shaped brilliant and it is on display at Tiffany's, New York. Setting is another skilful and delicate stage in the creation of a piece os diamond jewellery.