The space lattice of a diamond belongs to the cubic system, and its diamond structure has a lattice

constant of aZ0.3560 nm and a cleavage plane of 111.

Diamond is produced with so called, diamond luster, and is white or transparent. But sometimes

yellow, red, orange, green, blue, brown, and black colored diamond exists. Black diamond is called

carbonad. The diamond from Kimberley, a major mining source, is called Kimberlite. Recently,

diamond has been fabricated under high temperature and pressure, but it is not as large and is used

only for abrasives.