The Woyie River Diamond was recovered on 6 January 1945 from the Woyie River near Koidu in eastern Sierra Leone. The uncut stone weighed 770 carats (154 g), and at that time it was the largest alluvial diamond ever found, and the third largest diamond discovered in Africa, after the Cullinan Diamond and the Excelsior […]
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Great Mogul is believed to have been discovered around 1650, most probably around the Kollur Mine in the Golconda region of southern India. Tavernier described the diamond thus: “The stone is of the same form as if one cut an egg through the middle” The 787 carats (157.4 g) rough diamond was gifted by Emir
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The Incomparable Diamond belongs to the family of magnificent and rare yellow diamonds.It was originally found in 1984 in the Democratic Republic of Congo (what was known as Zaire) in Mbuji Mayi, a small unknown town. It has earned many titles due to its weight. When it was found, the rough diamond weighed 890 carats (about
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The 968.9-carat (193.78 g) Star of Sierra Leone diamond was discovered by miners on February 14, 1972, in the Diminco alluvial mines in the Koidu area of Sierra Leone. It ranks as the fourth-largest gem-quality diamond and the largest alluvial diamond ever discovered. On October 3, 1972, Sierra Leone’s then-President, Siaka Stevens, announced that Harry
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The Excelsior Diamond is a gem-quality diamond and was the largest known diamond in the world from the time of its discovery in 1893 until 1905 when the Cullinan Diamond was found. It was founded on June 30, 1893, at the Jagersfontein Mine in South Africa, 130 kilometers (81 miles) southeast of Kimberley whose fame
let’s see some world’s biggest diamonds found ever in history 1. Cullinan diamond – 3106.00 carats. founded: 1905 ( south Africa ) Cullinan DiamondThe rough diamondWeight 3,106 carats (621.2 g)Colour Near colorlessCut 105 stones of assorted cutsCountry of origin South AfricaMine of origin Premier MineCut by Joseph Asscher & Co.Original owner Premier Diamond Mining CompanyOwner
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in polished diamonds, the polishing of diamonds is the most important factor. polishing quality is responsible for how diamonds are shiny. diamond polishing is subject that fully depends on the hands of diamond artisans who polish the diamond. only artisans are done with the beauty of each diamond. good polishing is shown the brilliance of
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Gem Quality Diamond Distribution Chart and diamond manufacturing process. let’s understand what is happening inside the diamond industry, and how diamonds have come to your fingers. there are two main systems for selling diamonds, simple funnel. Debeers and other major diamond producers directly sell diamonds to diamond manufacturers. but are you know what they do
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Gem-quality diamonds are mostly used in the jewelry industry. These quality diamonds are a good color and good quality. we can categorize diamonds as of use like this, industrial quality diamonds useful for industry, yellow color diamonds are good for industrial use because its tough than other diamonds. the most common use of industrial diamonds is in die/
Types of Rough diamond sorting: After being found in a diamond mine, it is classified into three types,1. Primary sorting – At Mines.2. Secondary sorting or commercial sorting – At CSO / DTC and trading offices.3. Manufacturer sorting (Market sorting or Third stage of sorting) – At Manufacturing offices Different stages of Assortment -Different stages
