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Garnets are any of a group of semi-precious silicate stones that range in color from red to green (garnets occur in all colors but blue). Some garnets used as gemstones include pyrope (the deep red garnet), almandine, spessartine, grossular, the iron-aluminum dark red garnet (also known as the carbuncle stone), Uvarovite (rare), and the lustrous Andradite (which includes the valuable green demantoid garnet, Topazolite , and Melanite). Red garnet is the birthstone for January.
Chemistry:
X3Y2(SiO4)3 - General Formula
The X can be calcium, iron, magnesium. The Y represents trivalent metals such as aluminum, chromium, iron and in the rarer garnets; vanadium, titanium, zirconium and silicon.
Class:
Silicates
Subclass:
Nesosilicates
Group:
Garnet Group
Varieties:
Alamadine, Andradite, Grossular, Pyrope, Spessartine, Uvarovite
Crystal:
Isometric (Cubic)
Grossular Gallery
Spessartine Gallery
Metaphysical Properties

 
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