Fusion Alternatives/Hennig Tenders is holding a tender of large rough stones from the Koidu mine in Sierra Leone.
The single stone sale is of diamonds weighing 10.8 carats and more, and are of original offtake.
Viewing of the diamonds began on May 17 in Ramat Gan, Israel, and continues until May 31.
The diamonds will then be on display in Antwerp from June 1-5.
