RockVault
Diopside

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

monoclinicuncommonsilicates

Diopside

CaMgSi2O6

This image displays a cluster of vibrant green, prismatic diopside crystals, exhibiting good form and clarity.

Diopside Physical Properties

Mohs Hardness

6

Crystal System

monoclinic

Luster

vitreous

Streak Color

white

Cleavage

good on {110} at 87 and 93 degrees

Fracture

conchoidal to uneven

Specific Gravity

3.27

Colors

green, colorless, white, gray, yellow, brown, black, blue, violet

Transparency

transparent

Type Locality

Merelani Hills (Mererani), Lelatema Mts, Arusha Region, Tanzania

Mineral Group

silicates

Uses

jewelry, collector, industrial

Associated Minerals

calcite, dolomite, garnet, vesuvianite

Rarity

uncommon

Geological Context

Diopside commonly forms in metamorphic rocks such as skarns, marbles, and serpentinites, and can also be found in some mafic and ultramafic igneous rocks.