The rough diamond
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Weight | 3,106.75 carats (621.350 g) |
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Color | White |
Cut | Assorted |
Country of origin | South Africa |
Mine of origin | Premier Mine |
Cut by | Asscher Brothers |
Original owner | Premier Diamond Mining Company Ltd |
Owner | Queen Elizabeth II in right of the Crown (I and II) and as a private individual (III–IX) |
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing 3,106.75 carats (621.35 g), discovered at the Premier No. 2 mine in Cullinan, modern-day South Africa, on 26 January 1905. It was named after the chairman of the mine, Thomas Cullinan.
It was presented to King Edward VII of the United Kingdom for his 66th birthday and cut into several polished gems, the largest of which is named Cullinan I or the Great Star of Africa, and at 530.4 carats (106.08 g) it is the largest clear cut diamond in the world. It was the largest polished diamond of any colour until the discovery in 1985 of the Golden Jubilee Diamond (545.67 carats (109.13 g)), also from the Premier Mine. Cullinan I is mounted in the head of the Sovereign's Sceptre with Cross. The second-largest is Cullinan II or the Second Star of Africa; at 317.4 carats (63.48 g) it is the fourth-largest cut diamond in the world, and is mounted in the Imperial State Crown. Both diamonds are part of the Crown Jewels which belong to the monarch in right of the Crown.
Seven other major diamonds cut from the original weighing a total of 208.29 carats (41.66 g) are privately owned by Queen Elizabeth II, who inherited them from her grandmother, Queen Mary, in 1953 along with ninety-six minor stones.
The Cullinan diamond was found by a miner named Thomas Evan Powell, who brought it to the surface and gave it to Frederick Wells, surface manager of the Premier Diamond Mining Company in Cullinan, South Africa, on 26 January 1905. At approximately 1 1⁄3 pounds (600 grams), 3 7⁄8 inches (98 mm) long, 2 1⁄4 inches (57 mm) wide and 2 5⁄8 inches (67 mm) high the diamond was twice the size of any previously discovered. Wells immediately took it for examination.