Lazurite

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Physical & Optical Properties

Mohs Hardness 5,5
Specific Gravity 2,75
Refractive Index 1,5
Crystal System Isometric
Luster Vitreous
Cleavage Poor
Fracture Uneven
Color various

Mohs Hardness

Mohs Hardness: 5,5
1 Soft10 Hard

Crystal System

Value & Market

Price Tier Budget (< $50/ct)

About Lazurite

Lazurite is the blue sodium calcium aluminosilicate sulfate mineral that is the primary blue component of lapis lazuli, responsible for its iconic ultramarine color due to sulfur radical anions (S₃⁻) trapped in the sodalite-group framework structure. It forms in contact metamorphic limestones and is found as individual crystals and lapis lazuli rock in Afghanistan, Chile, Russia, and the United States. Pure lazurite crystals are rarely seen as individual gems; the mineral is most significant as the chromophore of lapis lazuli.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Lazurite?
Lazurite is the blue sodium calcium aluminosilicate sulfate mineral that is the primary blue component of lapis lazuli, responsible for its iconic ultramarine color due to sulfur radical anions (S₃⁻) trapped in the sodalite-group framework structure. It forms in contact metamorphic limestones and is
What is the hardness of Lazurite?
Lazurite has a Mohs hardness of 5.5, making it moderate for use in jewelry.
What color is Lazurite?
Lazurite is primarily Various.
How much does Lazurite cost?
Lazurite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Lazurite?
Lazurite belongs to the Isometric crystal system.

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