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No Reserve Price Sapphire - 2.33 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
No. 83814895
No. 83814895
Natural Spessartite Garnet, in the trade also called "mandarin garnet".
Pure and vibrant transparant intense orange colour.
Cut as an cabouchon oval but has the ability to be faceted to a wonderfull gemstone cut.
Measurements are L 11.76 x W 9.96 x D 5.97 mm
Spessartite Garnet; Origin and Sources
Spessartite garnet deposits are found in Burma (Myanmar), Brazil, China, Kenya, Madagascar, Sri Lanka (Ceylon), Tanzania and the USA. The most desirable gemstones come from Namibia and are known as "mandarin spessartite".
Spessartite Garnet Gemological Properties
Characteristics Values
Chemical Formula: Mn3Al2(SiO4)3 Manganese aluminum silicate
Crystal Structure: Cubic; rhombic dodecahedron, icositetrahedron
Color: Orange, orangey-yellow, red-brown
Hardness: 6.5 to 7.5 on the Mohs scale
Refractive Index: 1.790 to 1.820
Density: 4.12 to 4.18
Cleavage: Indistinct
Transparency: Transparent, translucent
Double Refraction or Birefringence: Usually none
Luster: Vitreous
Fluorescence: Mainly none
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