Posts Tagged ‘largest diamond’

About Diamond Weights

Diamonds are measured in Carat Weight. One carat weighs 200 milligrams. If a diamond is referred to as four grains, this also means that it is a one carat diamond. The word Carat comes from the word carob. A carob is a bean that grows on a tree in the Mediterranean. In times past, if a diamond weighed the same as a carob bean, it was one carob, or one carat.

However, in the far east, where Carob trees do not grow, rice was used to measure the weight of a diamond. If a diamond weighed as much as four grains of rice, it was four grains ? or one carat as we know it to be now. The majority of diamond purchases are for diamonds that are 1/3 of a carat.

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Where Diamonds are Mined

Argye mine located in the Kimberley region in the far north east of Western Australia. Owned by Rio Tinto, this mine is the world?s largest single producer of volume of diamonds. However, due to low proportion of gem quality diamonds it is not the value leader. It does produce 90-95% of the world?s supply of pink diamonds.

Diavik is also owned by Rio Tinto, located in Canada it is a very large mine. It is located north of Yellowknife and south of the Artic Circle on an island. The island is connected by an ice road. It is also an important part of the regions economy employing more than 700 people and producing more than 8 million carats annually.

Ekati diamond mine is owned by BHP Billiton and located south of the artic circle in the Northwest Territories of Canada. The Ekati is Canada?s first operational diamond mine. Diamonds mined here are sold under the Aurias trade name Authenticity is verified through Canada Mark service. CanadaMark service is also owned by BHP Billiton Diamonds, Inc.

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