Russian miner ALROSA has announced the recovery of a 214.65-carat diamond from the Nubrinskoye placer deposit, which is in the immediate vicinity of the Nyubrinskaya pipe primary deposit.
The crystal measures 42.11mm x 34.26mm x 16.07mm, and is translucent with a gray hue. The stone contains cracks filled with graphite and sulphide composition and the diamond is 4 Black Clivage/Makeable Gray.
Nyurba Mining and Processing Division operates at the Nakyn ore field and develops Nyurbinsky and Botuobinskyopen-pit mines, and same-name alluvial placers. In the first quarter of 2016, the Division produced 2.16 million carats – and in 2015, produced 13.5 million carats or 5 percent of ALROSA’s total production.