Pink Diamonds
The Argyle mine, located in Western Australia produces almost the entire World's red and pink diamonds. Although it is the world's largest diamond mine, most of its diamonds are champagne and cognac colour. Around 0.1% are actually pink. Due to the rarity of natural pink diamonds, they tend to be on the more expensive side of the fancy colours.

Yellow Diamonds
Diamonds with colours below the Z range have a yellow colour are graded in the fancy colour range. Fancy yellow diamonds are generally less expensive than D colour diamonds yet occur far less frequently in nature, making them an affordable investment and a beautiful alternative to a more traditional white diamond.

Blue Diamonds
Natural Blue diamonds are in high demand and short supply. It is becoming increasingly difficult for many dealers to locate these rare gems. With hues ranging from a faint greyish colour to an ocean blue, these beautiful diamonds are a common addition to a prominent connoisseur's collection.

Green Diamonds
Pure green diamonds are very rare. For every two pink diamonds there would be no more than one green recovered. Pure green diamonds have come in contact with radioactive minerals such as uranium through natural irradiation of the earth. More common are yellowish-green, greenish-yellow and olive-green which are still quite rare and demand extremely high prices.

Orange Diamonds
Although not always regarded as such, natural orange diamonds, referring to those with a single colour descriptor of "orange" are some of the most elusive of all natural coloured diamonds. So rare is it that a orange diamond receive a colour grading of pure orange that many collectors have never seen one. More common, yet hardly abundant are orange diamonds with a colour modifier such as brown or yellow. Prized for their beauty and rarity, orange diamonds are one of the most sought after colours by prominent collectors. One of the most famous orange diamonds, the Pumpkin Diamond Ring, containing the World's largest cut fancy vivid orange diamond, was worn by Best Actress winner Halle Berry to the 2002 Oscars. This ring is valued at over $3 Million.

Red Diamonds
Red Diamonds are the rarest of the fancy colour diamonds. In fact, they are so rare in nature that most jewellers and diamond dealers have never even seen a natural red diamond. The world's largest red diamond is known as the Red Shield, and weighs "only" 5.11 carats, compared with over 600 carats for the largest diamond of any kind. It is not a large stone by any means, but is so rare simply because it is red.

Secondary colours
Natural coloured diamonds come in just about every possible colour observed in nature. In order to achieve some of these colours, diamonds often contain a second or even third colour. The dominate hue is always expressed last with the secondary colours preceding it. Usually, these secondary colours are followed by the suffix "-ish" at the end, as in fancy purplish pink. If the colour grade contains two colours such as fancy purple pink, this means the colours are dispersed evenly throughout.