Mineral - Diamond
Diamond
Chemical Properties
Mineral Class
Elements
Toxicity
none
Formula
C
Unit Cell
a=3.56 Z=8
Physical Properties
Hardness
10
Streak
white
Density
Normal (2-3,5)
Cleavage
Perfect after {111}
Fracture
uneven
Tenacity
Brittle
Optical Properties
Color
whiteredyellowgreencolorless
Birefringence
Luster
Adamantine
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
isometric
Point Group
hexoctahedral - 4/m 3 2/m
Space Group
Fd 3 m (227)
Habit
dodecahedron, Tetrahedron, Cube
Formation
Magmatic, Metamorphism
Paragenesis
Twinning
Contact twins after {111}
Rarity
Rather rare
Synonyms
Diamond