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Entry № 263

Lazurite

Sodium calcium aluminium silicate sulfate

The blue heart of lapis lazuli.

Chakra

Third Eye · Throat

Element

Water

Zodiac

Sagittarius · Libra

Lazurite

I. The Metaphysical Reading

How the stone has been held.

Lazurite carries the concentrated symbolism of lapis lazuli: truth, inner vision, and the voice that speaks without fear. It is used to deepen meditation and to align thought with authentic expression.

Chakra
Third Eye · Throat
Element
Water
Zodiac
Sagittarius · Libra
Keynote
The blue heart of lapis lazuli.

II. The Scientific Reading

What the lattice actually does.

Lazurite is the essential blue mineral in lapis lazuli. It is a feldspathoid, meaning its silica content is lower than that of feldspar, and its vivid color comes from sulfur radical anions trapped in the aluminosilicate cage. Historically, it supplied the pigment ultramarine.

Formula
(Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl)₁₋₂
System
Isometric
Hardness
5 – 5.5 (Mohs)
Provenance
Afghanistan, Siberia, Chile, Angola

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
(Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl)₁₋₂
Crystal System
Isometric
Mohs Hardness
5 – 5.5 (Mohs)
Density
2.38 – 2.42 g/cm³
Refractive Index
1.50 – 1.55
Provenance
Afghanistan, Siberia, Chile, Angola
Color Origin
Intense azure blue from S₃⁻ chromophores

Related Crystals

Stones that share this lattice

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Citrus clarity in crystalline form.