Olivine, peridot

Olivine, peridot specimen
Category
Silicate
Formula
(Mg,Fe)₂SiO₄
Crystal system
Orthorhombic
Color
Olive green in black rock
Hardness
6.5 to 7
Density
3.2 to 3.4 g/cm³
Luster
Vitreous
Cleavage
Poor
Fracture
Conchoidal
Tenacity
Brittle
Streak
White
Transparency
Transparent to translucent
Other names
Peridot
Similar minerals
Tourmaline, Apatite, Garnet

Location
Lanzarote
Date
2026-09

Gift from M., bought in Lanzarote.