Cullinan Diamond
The Cullinan diamond was found below the surface at Premier Mine in Cullinan, Transvaal Colony, by Frederick Wells, surface manager at the mine, on 26 January 1905. It was approximately long, wide, deep, and weighed . Newspapers called it the "Cullinan Diamond", a reference to Sir Thomas Cullinan, who opened the mine in 1902. It was three times the size of the Excelsior Diamond, found in 1893 at Jagersfontein Mine, weighing . Four of its eight surfaces were smooth, indicating that it once had been part of a much larger stone broken up by natural forces. It had a blue-white hue and contained a small pocket of air, which at certain angles produced a rainbow, or Newton's rings.
Kimberlite Diamond (brand)
Kimberlite Diamond's diamond industrial park in Pudong, Shanghai covers an area of 22,000 square meters, covering the embryo import sorting, cutting, diamond designing, gold production mosaic, and all aspects of the diamond supply chain with design processing capacity up to 150,000 carats. The Kimberlite Diamond Industrial Park which was completed on October 9, 2008, is the first diamond industrial park in Shanghai built by Kimberlite Diamond and is also the biggest in China.