Jewelry designer Nina Runsdorf was at a trade show in the early 2000s when a “large brown rock” the size of a pebble caught ...

but weak demand is largely to blame for declining natural-diamond prices. It has been bad enough that Anglo American-owned De Beers, one of the world’s largest diamond miners, reduced its rough ...

Rough diamonds, fit for cutting, are sold at 41 13s. 4d., to 42 the carat. A carat is rather more than three grains, and 156 carats equal to one ounce Troy. But if the stones ' are above one carat ...

The Natural Diamond Council established the official ... It can grow both clear and custom-colored rough stones in its large-scale reactors and it is one of the industry’s leading producers ...

(IDEX Online) - Arkansas governor Sarah Huckabee Sanders wore an all-American rough diamond to Donald Trump's presidential ...