PHYSICAL PROPERTIES

COLOUR:
Diamond is available in pale yellows, browns, grays, and also white, blue, black, reddish, greenish and colorless.

LUSTER:
Diamond is adamantine to waxy.

TRANSPARENCY:
crystals are transparent to translucent in rough crystals.

CRYSTAL SYSTEM:
it is isometric; 4/m bar 3 2/m.

CRYSTAL HABITS:
Include isometric forms such as cubes and octahedrons, twinning is also seen.

HARDNESS:
The hardness od the diamond is about 10.

SPECIFIC GRAVITY:
The specific gravity of diamond is 3.5 (above average).

CLEAVAGE:
It is perfect in 4 directions forming octahedrons.