Difference between revisions of "Tigereye"
From The Gemology Project
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Latest revision as of 14:05, 19 October 2006
Agate | |
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Chemical composition | SiO2 Silicon dioxide |
Crystal system | Trigonal |
Habit | Aggregate |
Fracture | Conchoidal |
Hardness | 6.5-7 |
Refractive index | ± 1.55 |
Specific gravity | 2.60 |
Lustre | Vitreous |