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.