Carbonado
Revision as of 12:06, 27 April 2013 by (username removed)
Description
A black or dark-color diamond. Carbonado diamonds have primarily been found in Brazil (Sao Salvador), Bahia, and Borneo. They are usually opaque, granular stones with no distinct cleavage. Carbonado diamonds are used for in abrasive coatings on drill bits, and grinding wheels. They are also used on rock cutting saws, glass cutters, phonograph needles, hardness testers, semiconductors, and wire-drawing dies.
Synonyms and Related Terms
black diamond; carbons; industrial grade diamond
Other Properties
No cleavage. Slightly porous.
| Composition | C |
|---|---|
| Mohs Hardness | 10 |
| Density | 3.1-3.3 |
Additional Information
Mineralogy Database: Diamond
Comparisons
Properties of Common Abrasives
Authority
- R.M.Organ, R.M.Organ, Design for Scientific Conservation of Antiquities, Smithsonian Institution, Washington DC, 1968
- Encyclopedia Britannica, http://www.britannica.com Comment: "Carbonado." Encyclopdia Britannica. 26 Apr. 2004 .
- C.W.Chesterman, K.E.Lowe, C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- G.S.Brady, G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 264
- Random House, 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