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Chlorastrolite

Chlorastrolite.

Gemological Information for Chlorastrolite

  
Color:Mottled light and dark green with a radial fibrous structure.
Crystal Structure:Monoclinic
Refractive Index:1.650 to 1.660
Durability:Fair
Hardness:5 to 6
Family:
Similar Stones:Malachite, Azurmalachite, Dyed Onyx, Jade
Treatments:None
Country of Origin:U.S.

Chlorastrolite Care

  
Ultrasonic Cleaning:Risky
Steam Cleaning:Risky
Warm Soapy Water:Safe
Chemical Attack:Attacked by Acid
Light Sensitivity:Can Lighten with Long Exposure to Sunlight.
Heat Sensitivity:Unknown

Sources

  • Gem Reference Guide, Los Angeles: Gemological Institute of America, 1988. Pp. 49-50.