Properties
Mineral group: Sillimanite (Fibrolite)
Chemistry: Al2SiO5
Color: Colourless, Bluegreen, Blue, Green, Brown
Crystal system: Orthorombic
Mohs Scale hardness: 6-7,5
Refractive index: 1,653-1,685
Birefringence: 0,014-0,021
Specific gravity: 3,20-3,26
Information
Possibilities for Confusion
Scapolite, Zircon, Quartz
Deposits
Sri Lanka, Burna
Miscellaneous
Very rare as/in gemstonequality. Considered very hard to cut facet sillimanite because of its different hardness and perfect clevage. Also occur with catseye effect.
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Sillimanite in Healing (Source: ChatGPT)
Sillimanite, also known as fibrolite, is a crystal with subtle yet powerful energy that is often used in healing to promote balance, clarity, and focus. It is particularly valued for its connections to calm and mental strength.
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