industrial diamond

British  

noun

1. a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc

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Example Sentences

It actually has the strength of an industrial diamond.

From New York Times

Two months ago, she suffered a humiliating defeat after suing General Electric on charges it conspired with DeBeers of South Africa to fix industrial diamond prices.

From Time Magazine Archive

The industrial diamond concession in northeastern Angola will produce less than half its prewar output of 2 million carats this year.

From Time Magazine Archive

In the big central province of Kasai, Baluba tribesmen declared the independence of something called Mining State, which, they hoped, would allow them to retain the huge industrial diamond lodes that supply three-quarters of the free world's production.

From Time Magazine Archive

For some of the miners who saw the stone said it was a rare gem worth $600,000 or more, but others scoffed that it was only an industrial diamond worth a bare $4,000.

From Time Magazine Archive