A polycrystalline mineral in the garnet group that occurs in a green or pink color, sometimes intergrown with idocrase. Bright green samples are sometimes used as a jade simulant.
Gemological Information for Hydrogrossular Garnet
| Color: | Green, Bluish Green, Gray, White & Pink |
| Crystal Structure: | Cubic |
| Refractive Index: | 1.72 (+.010-.050) |
| Durability: | Good |
| Hardness: | 7 |
| Family: | Garnet |
| Similar Stones: | Idocrase, Jadeite, Nephrite, Saussurite, Rhodonite, Unakite |
| Treatments: | None Known at this Time |
| Country of Origin: | Green & Pink – U.S., Canada & South Africa, White – Myanmar & China |
Hydrogrossular Garnet Care
| Ultrasonic Cleaning: | Safe |
| Steam Cleaning: | Safe |
| Warm Soapy Water: | Safe |
| Chemical Attack: | Slight Hydrofluoric Acid Reaction |
| Light Sensitivity: | Stable |
| Heat Sensitivity: | Fractures with Extreme Heat |