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.

Hydrogrossular watermelon 270x170.jpg

'Watermelon' Hydrogrossular

Gemological Information For Hydrogrossular

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 Care

Ultrasonic Cleaning: Safe
Steam Cleaning: Safe
Warm Soapy Water: Safe
Chemical Attack: Slight Hydrofluoric Acid Reaction
Light Sensitivity: Stable
Heat Sensitivity: Fractures with Heat Extremes