Two samples of carbon crystals, which are clear and give off a kaleidoscope of spectral colours under direct sunlight, may appear to be identical. However, one is a billion years old, and the other is ...

Diamonds have long been the ultimate symbol of love and commitment, their sparkling brilliance forever linked to life’s most emotional moments. Thanks to decades of marketing genius—most notably from ...

“Up to 1,750 tons of earth has to be displaced to mine just 1 carat or 0.2 grams, of diamond and a million miners in Africa earn less than a dollar a day with some dying in accidents. Child labor is ...

It takes intense pressure and temperatures north of 2,000 degrees for a diamond to form deep within the Earth. But these days, there’s another way to create a diamond: in a lab, where a diamond can go ...