An industrial grade diamond that is a dark or opaque color. Black diamond, also called carbonado, is usually used for abrasives, drills, and semiconductors. They are usually opaque, granular stones with no distinct cleavage.
Synonyms and Related Terms
carbonado; carbons; industrial grade diamond
Sources Checked for Data in Record
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 264
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979