Petra Diamonds have unearthed an exceptional 232.08 carat white diamond at the Cullinan mine in South Africa which is expected to fetch between $10 million and $16 million.

The stone is a D colour Type II diamond with size of a strawberry and no measurable nitrogen impurities. “The diamond is practically see-through, so it is very likely to produce a flawless stone,” says Petra spokesperson Cathy Malins.

It has not been determined when the stone will be sold but the timing expected is in the second quarter of this financial year.