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This Time, Alrosa Finds A 214-Carat Rough Diamond
This big diamond find, discovered in the Nyurbinskoye placer deposit, is the miner’s third in as many months.
Moscow--Alrosa has uncovered yet another big diamond, its third in as many months.
It is translucent with a gray hue and measures 42.11 x 34.26 x 16.07 mm.
There are traces of dissolution, such as tetragonal cavities, etching channels and caverns, on the surface of the rough stone.
Alrosa also said it contains cracks filled with graphite and sulphide composition and that it’s color is “4 black clivage/makeable gray.”
The Nyurbinskoye placer deposit is localized in the immediate vicinity of the Nyurbinskaya pipe primary deposit.
Its share of this placer deposit in the company’s total production was 5 percent in 2015 and had reserves of 13.5 million carats as of Jan. 1, 2015.
Last month the diamond miner dug up a 241.21-carat rough diamond from the Nyurbinskaya open-pit mine, and in May Alrosa found a 207.29-carat diamond from the Zarnitsa pipe at the Udachny Mining and Processing Division.
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