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The Okavango Blue is a 20.46 carat blue diamond of exceptional clarity. [1]The Okavango Blue originated from the Orapa diamond mine in Botswana.The original stone was found in May 2018, weighing 41.11 carat, and was cut in an oval shape. [2]
Yellow ground kimberlite is easy to break apart and was the first source of diamonds to be mined. Blue ground kimberlite needs to be run through rock crushers to extract the diamonds. [27] Mir mine. See also Mir Mine and Udachnaya pipe, both in the Sakha Republic, Siberia. The blue and yellow ground were both prolific producers of diamonds.
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.
Check out this rare blue sparkler found in a South African mine earlier this month. 'It's 29.6 carats and about six times bigger than an acorn,' WPBF reports. 'Officials haven't put an exact price ...
The Golconda diamondiferous region is located in the Southern Indian peninsular shield, [2] which was formed during the process of proterozoic and Insular India. [3] The region is spread over 50,000 km 2 (19,000 sq mi), within the sediments of the Krishna-Pennar river basin and Deccan Traps, [2] and contains 120 out of the 150 kimberlite pipes in India. [4]
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.
LITTLE ROCK, Ark. (AP) — A bank manager discovered a 9.07-carat diamond at a state park in southwestern Arkansas after thinking the precious gem was a piece of glass.
Finsch diamond mine is one of the world's most important diamond mines and South Africa's second largest diamond operation by production. On 14 September 2011, Petra purchased Finsch as a fully staffed, operating mine from De Beers for a total consideration of ZAR1.4 billion. Finsch is a major producer, having supplied over 126 million carats ...