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The diamond was first given a generic name after the mine (Karowe) and the pipe (AK6) where it was found. [13] On 18 January 2016, Chief Executive Officer William Lamb of Lucara Diamond announced a competition, open to all Botswana citizens, to name the stone. In addition to naming the diamond the winner would receive P25,000 (about $2,170). [14]
English: The locations of RuneScape game servers. Coutries marked on this map include the United Kingdom, the United States, Canada, the Netherlands, Australia, Sweden, Finland, Belgium, Mexico, Brazil, Ireland, Norway, Denmark, New Zealand, France, and India. An official list of RuneScape server locations can be found here
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.
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.
Argyle diamond mine The open pit of the Argyle diamond mine. A large mining truck is visible on the road for scale. Location Argyle Diamond Mine Location in Australia Location Lake Argyle State Western Australia Country Australia Coordinates 16°42′44″S 128°23′51″E / 16.71222°S 128.39750°E / -16.71222; 128.39750 Production Products Diamonds History Opened 1985 Closed ...
Location Chipembele [43] Zambia, 2021 7,525 carats (1.505 kg) Israel Diamond Exchange, Eshed – Gemstar [44] Bahia Emerald [45] Brazil, 2001 180,000 carats, crystals in host rock 752 lb (341 kg) Los Angeles County Sheriff's Department [46] Carolina Emperor [47] [48] United States, 2009 310 carats uncut, 64.8 carats cut
The 253-carat Oppenheimer Diamond—an uncut diamond does not show its prized optical properties. In colored diamonds, cutting can influence the color grade of the diamond, thereby raising its value. Certain cut shapes are used to intensify the color of the diamond. The radiant cut is an example of this type of cut.
On August 22, 2024, Lucara announced the discovery of a 498.4 g (2,492 carats) rough diamond there. [15] Currently, it is the second-largest gem-quality diamond ever found [ 16 ] and, according to the government of Botswana , the largest ever discovered in the country.