Petalite

Petalite is a rare and fragile stone. For this reason, it is cut and polished for collectors only. A petalite stone is transparent, white, or colorless, occurring as tabular or columnar prisms with a glassy appearance. Massive petalite is more common and is cut en cabochon.

Occurrence

Elba (Italy), Austria, Brazil, Finland, Sweden, Namibia, Zimbabwe, and the USA are the sources of petalite crystals.

Petalite Properties

• Specific Gravity: 2.42
• Refractive Index: 1.50-1.51
• Birefringence (DR): 0.014
• Luster: Vitreous to pearly
• Crystal Structure: Monoclinic
• Composition: Lithium aluminum silicate
• Hardness: 6

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Crystals Directory

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Birthstone

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