(Mg,Fe)2SiO4Orthorhombic

Peridot

(Mg,Fe)2SiO4

Silicates
Chemical Formula(Mg,Fe)2SiO4
Crystal SystemOrthorhombic
Mohs Hardness6.5
Specific Gravity3.34
ColorOlive green, yellowish green
LusterVitreous
StreakWhite
CleavageIndistinct
FractureConchoidal

Occurrence

Gem variety of olivine. Found in basalt and peridotite. Found in meteorites too.

Hardness on Mohs Scale

6.5 / 10
Talc (1)Quartz (7)Diamond (10)