Alrosa, Russia, announced the recovery of a gigantic pink diamond on 21 September 2017 which, according to the company, could be the most expensive polished diamond in its history.
The 27.85-carat rough measuring 22.47 mm x 15.69 mm x 10.9 mm was unearthed by Almazy Anabara, an Alrosa subsidiary, at its alluvial mines in Russia’s Far East. The previous largest pink rough from Alrosa was 3.86 carats found in 2012.
Traditionally a rough diamond miner, Alrosa said in August that it plans to expand the polishing operation. It is deciding whether to sell the giant rough or to cut it and polish it themselves.
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