|GROSSULARITE GARNET MINERAL FACTS|
|The Gem and Mineral Collector's Photo Gallery by Nevada Outback|
Grossularite Mineral Facts:
Colorless, white, green,
cinnamon-brown, pale red and occasionally pink.
Density: 3.4 to 3.6
Crystallography: Isometric, hexoctahedral
Luster:. Vitreous glassy luster. It is transparent or translucent.
Optics: (Refractive Index): = 1.7438
Grossularite Garnet, Nevada
Under the influence of the air and moisture garnets often alters to other minerals, being partially or entirely changed to epidote, talc, muscovite, chlorite, serpentine, and occasionally to other substances.
Identification and Diagnostics
Localities and Origins:
In recent decades, large amounts of fine gem quality grossular garnet has come from Africa, principally Tanzania and Kenya. Some are orange colored, another source produces pale yellow, near colorless and light green varieties. However the best known variety of this garnet is the Tsavorite, a medium to deep green garnet colored by vanadium. Tsavorite has become the most valuable garnet type with a high price per carat for good quality stones. Its color comes close to that of a fine emerald with brighter optical characteristics and without the typical flaws.
Good crystals of grossularite
occur at Phippsburg, Raymond and
Return to the Mineral Collectors Information Page
Grossular Garnet, Variety Tsavorite
Pink Grossularite Garnet
Please note that the author, Chris Ralph, retains all copyrights to this entire document and it may not be reproduced, quoted or copied without permission.
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