|Russia’s Alrosa (MCX:ALRS), the world’s top diamond producer by carats, has unearthed a 27.85-carat pink stone the company believes could be the most expensive it has ever found. The miner said the gem-quality stone was found at its alluvial mines in Russia’s Far East, adding that the largest pink diamond it had previously discovered was less than 4 carats.|
24.78 carat Pink Graff Diamond made $46.2 million in 2010.
|The world's largest pink diamond, the 59.6-carat Pink Star was sold at auction April 4 in Hong Kong and fetched $71.2 million or $ 1.2m per carat. The Pink Star, IF, Fancy Vivid Pink was mined by De Beers in 1999 in Botswana as a 132.5-carat rough diamond before being cut and polished.|