Toronto-based Redaurum (RRK-T) has discovered two more large diamonds at the Kelsey Lake mine in northern Colorado.
The two gem-quality stones were found in mid-July from the KL2 kimberlite pipe. One is an octahendron measuring 28.2 carats, reportedly the sixth-largest gem stone discovered in North America. The other stone measures 16.3 carats.
About 65% of all diamonds produced so far at Kelsey Lake have been gem quality, and 25% have been larger than one carat.
The mine has an estimated resource of nearly 17 million tonnes of kimberlite material covering 22 acres.
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