Glittering Stones >> Semi
Precious Stones >> Grossular
Semi Precious Stone Grossular
Grossular is a calcium alumunium mineral species of garnet group with the chemical composition of Ca3Al2 (SiO4)3. Sometimes, the mineral grossular is also incorrectly called as grossularite. The common variety of grossular is hessonite that appears to be yellow crystals with inferior hardness. The shades of the mineral include cinnamon brown, red and yellow and mostly the gemstone is found in Siberia. The name grossular derives from the botanical name gooseberry. It is found in metamorphosed limestones with vesuvianite diopside, wollastonite and wenerite. The other names for grossular are misnomers, colophonite, ernite. Viluite is the variety name of grossular colored to be olive green, brownish or reddish.
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Historical Facts of Grossular
| Refractive Index |
1.72 - 1.748 |
| Chemical Composition |
Ca3Al2(SiO4)3 |
| Hardness |
7 - 7.5 |
| Density |
3.65 |
| Crystal Group |
Cubic |
| Luster |
Greasy to vitreous |
| Color |
Brown, Yellow, Green, red, Opaque pink |
| Varieties |
Hessonite, Tsavorite, Leuco-garnet, Xalostocite |
| Ocurrence |
Canada, E Africa, Pakistan, New Zealand, Ceylon, S.Africa, U.S.A |
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Gem Stones Grossular Jewelry
Grossular Bracelet  |
Grossular Earring  |
Grossular Necklace  |
Grossular Ring  |
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