Announcing the recovery of a 136.24-carat diamond from Nyurbinskaya pipe, PJSC Alrosa said that the gem-quality rough diamond is one of the largest rough diamonds recovered at its Nyurba Mining and Processing Division.

The Company reported that the diamond is 3 Black Makeable 1 Сolour, measures 29.32 х 23.88 х 21.9 mm and is a combination-form translucent colorless part of a crystal with columnar interlocking sculpture. It contains graphite and sulphide composition.

The diamond has not been named so far, Alrosa said.

Nyurba Mining and Processing Division is one of Alrosa’s youngest enterprises. It operates at the Nakyn ore field and develops Nyurbinsky and Botuobinsky open-pit mines, and two same-name alluvial placers, the statement said.

Its share in ALROSA Group’s production totaled 20% in 2015. Diamond mining in the first half of 2016 amounted to 3,315 thousand carats, having shown a 4%-growth as compared with the similar period of 2015.

Nyurbinsky open-pit mine was put into operation in 2001. Identified reserves of the diamond deposit under JORC as of January 1, 2015, amounted to 36.9 million carats. In 2015, the pipe accounted for 13% of Alrosa’s rough diamond production. In the first half of 2016, diamond mining grew 3% against the first six months of 2015.