According to a press release by Lucara, this is the second-largest rough diamond ever discovered ... Also read Student Discovers Rare Viking Armring in Denmark with Surprising International ...

reduced its rough diamond prices by 10% to 15% at its December sale, according to industry publication Rapaport News. Industry watchers say it is rare for De Beers to cut its own pricing.

Located roughly 20 minutes away from UTSA’s Main Campus at Castle Creek Village stands a small store full of hidden treasures.

Rough diamonds, fit for cutting, are sold at 41 13s. 4d., to 42 the carat. A carat is rather more than three grains, and 156 carats equal to one ounce Troy. But if the stones ' are above one carat ...