Huge South African diamond auctioned by Sotheby's
A huge South African diamond estimated at more than $7 million is being sold at auction this Tuesday in Geneva. This is a Fa…
A huge South African diamond estimated at more than $7 million is being sold at auction this Tuesday in Geneva. This is a Fa…
Scientists have discovered an almost unbreakable material that could rival diamond as the hardest material on Earth. The sci…
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