Coloured Diamonds

Diamonds are very popular in their well known white form, but they can also be pink, blue, yellow, green or, rarely, red. Coloured diamonds can be very valuable. By 1991, fancy coloured diamonds held 19 of the top 20 per carat price records at auction, beating white diamonds, emeralds, rubies and sapphires. At the present time fancy colour diamond output is estimated at 1 to 2 carats out of every 3000 carats mined.  The colour of coloured diamonds is due to the presence of impurities or structural defects.

Fancy coloured diamonds are not always naturally coloured as their colour may have been modified or enhanced through a process involving irradiation or heat. We are happy to advise you whether the coloured diamond you are buying has been treated in any way to enhance its colour.