The most popular diamonds on the jewellery market are the 'normal' clear diamonds that you find in engagement rings and pendants. However, diamonds can also be found with natural colours which are listed below. One thing to note about this 'fancy' diamonds is that they are extremely rare.
Black Diamonds
Black diamonds have been around for a long time, but have been particularly promoted and marketed in the last few years, which made them more fashionable.
Blue Diamonds
Natural ‘fancy’ coloured diamonds are very rare and expensive, and blue is one of the rarest and most desirable colours. Natural blue diamonds are so rare that most jewellers have never seen one, and will never own one. The Hope Diamond, safely on display in the Smithsonian Museum, Washington, is one of the world’s best examples.
In recent years, methods of producing intensely coloured diamonds, including fancy blue, have been developed. The treatment, which only works with a small minority of diamonds, involves irradiating them to cause the colour change, usually followed by heat treatment to stabilise the colour.
Brown Diamonds
Brown or brownish diamonds are often described as ‘champagne’ diamonds, presumably because it sounds more exotic, expensive and desirable than ‘brown’. Nevertheless, fancy brown diamonds are very rare, and can be very attractive. Most fancy brown diamonds are natural rather than enhanced.
Canary Diamonds
The term "canary" is used to denote the rare, intense and very beautiful fancy yellow coloured diamonds.
Pink Diamonds
Natural ‘fancy’ coloured diamonds are very rare and expensive, and pink diamonds are some of the rarest and most desirable. They’re so rare that most jewellers have never seen one, and will never own one.
Many pink diamonds today come from Australia, these however are usually quite small, normally well under 0.50ct. At around 185 carats, the Darya-i-Nur diamond is the largest pink diamond in the world.