Luxury jewellery brand de Grisogono has acquired the rights to one the world’s largest and rarest rough diamonds ever discovered. The 404 carat rough is the largest ever founder in Angola.

  The Constellation 813 carat & 404 Carat.Nemesis Int. partner with De Grisogono on both  rough diamonds   813 CARAT  "The Constellation"   The 813-carat gem, named The Constellation, was discovered in Botswana and purchased in May 2016  by the jeweller’s partner, Dubai-based diamond trading company Nemesis International, from mining company Lucara Diamond Corp. for...