Billion-Year-Old Black Diamond Sold For £3.16M
A billion-year-old black diamond, believed to be the world's largest cut diamond, has sold for £3.16m ($4.3m).Black diamonds ...
BBC2 年
The Enigma: Mysterious black diamond up for auction
A billion-year-old black diamond, believed to be the largest cut diamond on Earth ... usually about 2.6 to 3.2 billion years old - a time before dinosaurs existed. The Earth itself is around ...