Lazulite

Lazulite is a rare stone. Its colors vary from a mottled pale blue to dark blue. A transparent lazulite crystal is pleochroic, showing blue and colorless. However, it is often not transparent. Semi-translucent or opaque stones found as small fragments may be polished, carved, or tumbled to make beads or decorative stones. It is common to find a lazulite stone in the form of a bipyramidal structure.

Occurrence

Lazulite occurs in Brazil, the USA, Sweden, India, Switzerland, Austria, Angola, and Madagascar.

Lazulite Properties

• Specific Gravity: 3.10
• Refractive Index: 1.61-1.64
• Birefringence (DR): 0.031
• Luster: Vitreous
• Crystal Structure: Monoclinic
• Composition: Magnesium aluminum hydroxy phosphate
• Hardness: 5½

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Birthstone

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