carat

(Newser) - The world's highest mines, found in an area known as the Roof of Africa in the tiny nation of Lesotho, hold diamonds that are so prized they go for $2,000 a carat—20 times the world average of $100. But the excavation of these extremely precious gems is...

(Newser) - A pricey pink diamond smashed records today in Hong Kong when it sold for a glittery $2.2 million a carat—and $10.8 million overall. The 5-carat “vivid pink” wonder, which is near-perfect but not flawless, trumps the sale 15 years ago of a 19.66 carat specimen...