The 257 carat diamond is from Karowe Mine in Botswana.
The AK6 kimberlite, has reported the recovery of 47 diamonds of sizes greater than 50 carats, including 14 that exceeded 100 carats. The Karowe mine continues to outperform with the consistent recovery of large, high value diamonds, the recovery of this magnificent 257 carat diamond, along with the recovery of a significant parcel of larger stones over the past 6 months, strengthens our understanding of the resource at Karowe, said president and CEO William Lamb.