The world’s largest diamond was the Cullinan, found in South Africa in 1905. It weighed 3,106.75 carats uncut. It was cut into the Great Star of Africa, weighing 530.2 carats, the Lesser Star of Africa, which weighs 317.40 carats, and 104 other diamonds of nearly flawless color and clarity. They now form part of the British crown jewels.
The world’s largest documented polished diamond – unearthed in 1986, also in South Africa – is called Unnamed Brown. It weighs 545 carats and was cut down from a 700 carat rough diamond. It took an international team of expert cutters 3 years to complete the masterpiece. Another impressive diamond that also took 3 years to cut, and also is part of the British crown jewels, is the Centenary Diamond. It weighs 273.85 carats and is the world’s largest flawless diamond.
Not all diamonds are white. Impurities lend diamonds a shade of blue, red, orange, yellow, green and even black. A green diamond is the rarest. It is not the rarest gemstone, however. That title goes to a pure red ruby. Diamonds actually are found in fair abundance; thousands are mined every year. 80% of them are not suitable for jewellry – they are used in industry. Only diamonds of higher clarity are sourced to the jewellry stores.
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