← The Atlas

Entry № 053

Black Star Diopside

Calcium Magnesium Silicate with Magnetite

A four-rayed star crossed on dark stone.

Chakra

Heart · Root

Element

Earth

Zodiac

Virgo · Pisces

Black Star Diopside

I. The Metaphysical Reading

How the stone has been held.

Black star diopside is worked with as a stone of quiet guidance and reconciliation, particularly with maternal lineage. Practitioners speak of the four-rayed star as a compass reminding the bearer that even in darkened seasons an orientation remains available.

Chakra
Heart · Root
Element
Earth
Zodiac
Virgo · Pisces
Keynote
A four-rayed star crossed on dark stone.

II. The Scientific Reading

What the lattice actually does.

Black star diopside is a variety of the pyroxene diopside whose opaque black body is threaded with oriented magnetite needles. When cut en cabochon parallel to the crystal's basal plane, the reflections from two intersecting sets of needles form a sharp four-rayed star, an unusual asterism (most star stones show six rays). The Indian deposits of Karnataka and Tamil Nadu remain the sole commercial source.

Formula
CaMgSi₂O₆ with oriented magnetite needles
System
Monoclinic
Hardness
5.5 – 6.5 (Mohs)
Provenance
India (Karnataka, Tamil Nadu)

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
CaMgSi₂O₆ with oriented magnetite needles
Crystal System
Monoclinic
Mohs Hardness
5.5 – 6.5 (Mohs)
Density
3.22 – 3.38 g/cm³
Refractive Index
1.663 – 1.699
Provenance
India (Karnataka, Tamil Nadu)
Color Origin
Opaque black with a silvery four-rayed star (asterism)

Related Crystals

Stones that share this lattice

Explore the full Atlas →

Next in the Atlas

Bladed Calcite

Paper-thin stone stacked like petals.