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There are a limited number of commercially available diamond mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply. [1] Diamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action.
Canadian diamonds are diamonds which have been mined in any one of the provinces and territories of Canada. Diamond-rich areas were not commercially extracted in Canada until the early 1990s. [ 1 ] For the first 60 years of the 20th century, diamonds originated from kimberlite pipes and alluvial deposits in places such as Africa and some from ...
24.78-carat (4.956 g) A 24.78-carat Fancy Intense Pink diamond and, until the sale of the Sweet Josephine diamond in November 2015, it was the most expensive jewel ever sold at auction. Previously owned by Harry Winston and an unnamed private collector, and bought by Laurence Graff (November 2010). [31] —
Charm Diamond Centres is an independently owned Canadian jewellery retailer. [ 1 ] [ 2 ] [ 3 ] Its stores are primarily located within regional malls in Canadian provinces such as Ontario , Alberta , Manitoba , Saskatchewan , Nova Scotia , New Brunswick , Newfoundland and Labrador and Prince Edward Island .
The mining and distribution of natural diamonds are subjects of frequent controversy such as concerns over the sale of blood diamonds or conflict diamonds by African paramilitary groups. [131] The diamond supply chain is controlled by a limited number of powerful businesses, and is also highly concentrated in a small number of locations around ...
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