Grossular
Grossularite Garnet tumbled
A variety of Hydrogrossular
What is Grossular?
Although Garnet crystals are usually very small, some grossulars can be quite massive. These larger crystals are suitable for cutting and polishing so they're commonly turned into wonderful faceted gems, beads, or tumbled stones. The massive crystals of grossular from South Africa are known as Transvaal Jade.
Optical Properties
- Refractive Index
- 1.680-1.712
- Optical Character
- Isotropic
- Dispersion
- 0.02
Grossular Market Value Calculator
Estimate the market value of Grossular using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Grossular Localities Map
See where Grossular is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
More Images
© Robert M. Lavinsky
© Alkivar at English Wikipedia
Quick Facts
Physical Properties
- Color
- Colorless, white, green, yellow, orange, cinnamon-brown, pale red, occasionally pink
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca3Al2(SiO4)3
- Elements
- Al, Ca, O, Si
Also Known As
GrossularTelemarkitPechgranatKanelsteinGrossular garnet
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