Petra Diamonds, which has the world's third-largest resource of diamonds, said on Wednesday it had delayed the sale of gems ...

London-listed Petra Diamonds has postponed its tender five sales of about 200 000 ct of diamonds recovered at the Cullinan ...

The historic legal agreement that arranged for the cutting of the world's largest diamond is being auctioned later this month The story behind the cutting of the world’s largest gem-quality ...