Chlorastrolite
From Antique Jewelry University
Gemological information
| 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 |
| 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.