Coloured diamonds will always be more valuable than their white counterparts, but of all the varieties, pink diamonds take the trophy for the prettiest. Extremely rare, they are so exceptional that you could fit an entire year’s yield of premium-quality pink diamonds in the palm of your hand, and it is this that makes them one of the most portable forms of wealth on the planet.
Diamonds come from deep inside the earth, where high temperatures and high pressure naturally exist. Most were formed from carbon millions of years ago, which has been in the earth’s mantle since its origins. Some diamonds, however, are made from carbon that comes from the bodies and shells of prehistoric micro-organisms. Their main deposits consist of diamondiferous pipes, or tubes of mineral-rich volcanic rock. These rise to the surface from their primary deposits through volcanic activity in magma or molten rock, which pushes the kimberlite, a volcanic diamond-bearing rock, upwards.