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 fall in exports forced the world's biggest diamond polisher to reduce imports of rough diamonds by 18% from a year ago to $14.27 billion in the financial year ended March 31, the Gem and ...