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The first major development in diamond cutting came with the "Point Cut" during the later half of the 14th century: the Point Cut follows the natural shape of an octahedral rough diamond crystal, [2] eliminating some waste in the cutting process. Diamond cutting, as well as overall processing, is concentrated in a few cities around the world ...
In 1926, the company acquired the British coal machine manufacturer The Diamond Coal Cutter Company Limited of Wakefield, and renamed it the British Jeffrey-Diamond Company. On 28 December that year, [15] they also acquired the Galion Iron Works, which built road rollers and graders. Between 1951 and 1962, 80% of the Jeffrey Manufacturing ...
These diamond saws and good jewelry lathes enabled the development of modern diamond cutting and diamond cuts, chief among them the round brilliant cut. In 1919, Marcel Tolkowsky analyzed this cut: his calculations took both brilliance (the amount of white light reflected) and fire into consideration, creating a delicate balance between the two ...
Gabriel S. Tolkowsky (15 September 1939 – 28 May 2023) was a Belgian-Israeli diamond cutter, best known for cutting the Centenary Diamond. [1] He was the great nephew of Marcel Tolkowsky, father of the modern round brilliant diamond cut. [2] He is the sixth generation in his family to become well-known in the diamond cutting trade. [3] [4]
All together, the Western Palatinate had 108 diamond-cutting shops with 679 employees. In this same year, of course, came the onset of the Great Depression, and along with it came the beginning of the end for the diamond-cutting industry. Brücken was the economic hub of Palatine diamond crafting up until the Second World War. However, the ...
The Asscher Diamond Factory former headquarters on the Tolstraat 127 in Amsterdam. The Royal Asscher Diamond Company (Dutch: Koninklijke Asscher Diamant Maatschappij) was founded in 1854 by the Asscher family of gemcutters. The company is responsible for cutting some of the most famous diamonds in the world including the 2nd largest diamond ...
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Between 1991 and 1994 Pauline Willemse, a diamond polisher at Royal Coster Diamonds, polished the smallest diamond in the world. This is a brilliant cut stone with 57 facets, weighing 0.0000743 carats (0.01486 mg). 0.16–0.17 mm in diameter and with a height of 0.11 mm.