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A mineral in the garnet group that commonly occurs in a green to bluish green color, sometime intergrown with idocrase.

Gemological Properties

Gemological Information for Hydrogrussular, 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 Jadeite, Nephrite, Idocrase, Saussurite, Rhodochrosite, Rhodonite, Thulite, 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 Not Safe
Warm soapy water Safe
Chemical attack Slight Hydrofluoric Acid Reaction
Light sensitivity Stable
Heat sensitivity Fractures with Heat Extremes
Lang Antiques
Lang Antiques