Alrosa to auction a rare 242-carat rough diamond
Alrosa’s 242-carat diamond (Source: Alrosa) A Diamond the size of a ping-pong ball is about to sell for millions Miner Alrosa to put 242-carat stone up for sale this month The biggest gems have fared best as sector starts to recover Russian diamond giant Alrosa PJSC is putting one of its biggest-ever gem-quality stones up for […]