Russia’s diamond titan Alrosa recovers giant gem-quality stone in Far North
The precious stone, unearthed earlier this month, is the biggest discovery among the gemstone-quality diamonds at the company’s ‘International’ mine over the past two years. A similar 109.61 carat gem was extracted at the same deposit in the summer of 2017.
The latest discovery is nearly a perfect example of a light yellow rough diamond, which has “salient edges, one of them with cleavage, and small inclusions in the central zone,” according to Alrosa’s press-release.
“This crystal is unique as it has a large clean area despite the inclusions in the center – this makes it a gem-quality diamond,” Evgeny Agureev, member of the management board and director of the United Selling Organization at Alrosa, said.
According to the top-executive, the ‘International’ diamond deposit is well-known for diamonds of hallmark shape and purity. The mine regularly brings octahedron shaped diamonds with smooth edges.
Alrosa may name the newly-mined gem ‘Zarya’ (‘Dawn’) as the crystal was extracted on the eve of launching a new diamond field carrying the same name at the company’s Aykhal Mining and Processing Plant.
Opened in 1969, the ‘International’ deposit is currently the world leader in high-quality diamond content. The average content in different periods of mining reached 12 carats per ton. This is reportedly the world's largest carat content per ton of ore.
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