Difference between revisions of "Template:Demantoid"
From The Gemology Project
Africanuck (talk | contribs) |
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| Optic nature || isotrope | | Optic nature || isotrope | ||
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− | | | + | | Refractive index || 1.85-1.89 |
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| Birefringence || none | | Birefringence || none |
Revision as of 11:40, 1 November 2006
Demantoid Garnet | |
---|---|
Chemical composition | Ca3Fe2(SiO4)3
Calcium Iron Silicate |
Crystal system | Cubic |
Habit | dodecahedra |
Cleavage | none |
Hardness | 6.5 |
Optic nature | isotrope |
Refractive index | 1.85-1.89 |
Birefringence | none |
Specific gravity | 3.85 |
Lustre | vitreous to adamantine |