Crystal Diopside

Chemical Formula

CaMgSi₂O₆

Color

Green, Yellow, Brown, Black

Hardness

5 - 6

Crystal System

Monoclinic

Refractive Index

1.665 - 1.730

SG

3.3 - 3.5

Transparency

Transparent. Star Diopside is opaque.

Double Refraction

0.028

Luster

Vitreous

Cleavage

1,2 - prismatic. May also exhibit parting in one direction.

Mineral Class

Diopside