Rough diamonds, fit for cutting, are sold at 41 13s. 4d., to 42 the carat. A carat is rather ... mode of estimating the value, a perfect brilliant weighing half a pound, would be worth 420,000,000.

Prices for lab-grown diamonds will continue to fall over the next year, he said. Zimnisky didn't have a price target ... you're the only one with a three-carat diamond. But … if you go to ...

Old-Fashioned Values: Vintage settings and stones are ... Amanda Anka has this to thank fiancé Jason Bateman for: a three-and-a-half-carat diamond in a delicate twenties setting from Neil Lane.