Sodalite derives its name from its high level of sodium content. Blue sodalite is interspersed with white calcite giving it a patchy appearance. Confusion with Lapis Lazuli is possible due to their similar manifestation, but sodalite rarely contains pyrite. Other colors are possible but are rare.
Gemological Information for Sodalite
| Color: | Dark Blue to Dark Blue-Violet with White Calcite Streaks or Spots |
| Crystal Structure: | Cubic |
| Refractive Index: | 1.483 (+/- .004) |
| Durability: | Poor |
| Hardness: | 5 to 6 |
| Family: | Sodalite |
| Similar Stones: | Lapis Lazuli, Lazulite, Dumortierite, Dyed Jasper |
| Treatments: | None |
| Country of Origin: | Brazil, Canada, India, Namibia, USA |
Sodalite Care
| Ultrasonic Cleaning: | Never |
| Steam Cleaning: | Risky |
| Warm Soapy Water: | Safe |
| Chemical Attack: | Attacked by Hydrochloric Acid |
| Light Sensitivity: | Stable (Pink Can Fade) |
| Heat Sensitivity: | Can Fuse to a Colorless Glass |
Sources
- Gem Reference Guide, Los Angeles: Gemological Institute of America, 1988. Pp. 218-220.
- Schumann, Walter. Gemstones of the World, New York: Sterling Publishing, Co., 1977. P. 174.