Spessartite garnet has the following composition:
Mn3Al2(SiO4)3
Hardness (Mohs)
7 to 7.5 ...
Spessartite Garnet & Tsavorite Chemistry, Physical Properties
Crystal System
isometric (rhombic dodecahedron) ...
[Spessartite garnet "floater" crystal from Namibia, doubly terminated rock crystal quartz ("Herkimer Diamond") from New York, igneous vug lined with hydrothermally derived quartz crystals, vug from Germany, ...
Orange Spessartite Garnet
Pyrope
Pyrope garnet is a very saturated red: beautiful small Pyrope garnets found in Arizona are called anthill garnet because they are mined by ants, who carry them up when they are excavating their anthills.
Summer 1970, Spessartite garnet inclusions, p. 189, 1p.
Summer 1970, Spessartite absorption spectrum, p. 197, 2pp.
Summer 1970, Grossularite garnet inclusions, p. 196, 2pp.
Fall 1970, Testing demantoid with ultra-violet light, p.
Spessartine garnet (also called Spessartite garnet) is a type of a garnet that is orange (it varies from reddish orange to brownish orange to yellowish orange). The chemical composition is Manganese Aluminum Silicate.
Colorado.--Faceting-grade spessartite garnets can be found in the gas cavities in the rhyolite flow on Ruby Mountain near Nathrop, Chaffee County. Large specimen-grade garnets are available at the abandoned Salida Copper Mine.
Spessartite garnets range from yellow and orange through red to reddish brown to dark black/brown. Color change garnets exhibit a "alexandrite-like" effect when viewed in natural light or artificial lighting.
Bright orange to darker orange and red, also known as Spessartite garnet. Named after the Spessart district in Bavaria, Germany. Can be confused with other garnets and imperial topaz.
Enhancements
Spessartine garnet is not enhanced.
A cross between Spessartite garnet and Pyrope, this stunning gemtone exhibits a mesmerising range of colors from a burnt orange through to the much covetd pink orange of the rarest pieces.
3rd Place [view]
Allen Kleiman
A. Kleiman & Co.
Suite of 19 graduated brilliant, cushion cut spessartite garnets, 76.76 ctw.
Natural Dpessartine has an orange color, but iron impurities are usually present, giving it a reddish or brownish color. Spessartite garnet is ideochromatic, meaning that it is colored by a fundamental element in its composition ...
Spessartite garnet can be red, reddish orange, orange, yellow-brown, reddish brown, or blackish brown. A few garnets exhibit a color-change phenomenon.
99, spessartite garnet, specific gravity of 4.15, marcasite, specific gravity of 4.9, and cuprite (s.g., 6.0) and casseterite (s.g., 6.9). Diamond is in the heavy mid-range, with a specific gravity of 3.52.
 See also: Garnet, Spessartite, Color, Stone, Gemstone
  
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