Black diamond

From WebRef.org
Jump to navigationJump to search
  1. A variety of crystalline carbon, related to diamond, but showing no crystal form. Highly prized as an abrasive because of its hardness. Occurs only in Brazil. Syn: carbonado
  2. A term frequently applied to coal.
  3. A black gem diamond.
  4. Dense black hematite that takes a polish like metal.

Source: Dictionary of Mining, Mineral, and Related Terms


Sponsor: Refurbished Dell Laptops & Desktops Priced To Impress!!