Johannesburg: It’s big, it’s colorless, and it just might be flawless. In a year filled with notable diamond finds, Petra Diamonds has unearthed a particularly impressive stone—a 232 ct. D-color stone with “exceptional clarity.”

“The diamond is practically see-through, so it is very likely to produce a flawless stone,” says Petra spokesperson Cathy Malins.

She describes the rough as “the size of a strawberry.” The type IIa stone was discovered at Petra’s Cullinan mine in South Africa, which was purchased from De Beers in 2008. It has not been determined when the stone will be sold.