Difference between revisions of "Template:Ametrine"
From The Gemology Project
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| Line 7: | Line 7: | ||
| Crystal system || Trigonal | | Crystal system || Trigonal | ||
|- | |- | ||
| − | | Habit || | + | | Habit || Prismatic |
|- | |- | ||
| − | | Cleavage || | + | | Cleavage || Poor |
|- | |- | ||
| − | | Fracture || | + | | Fracture || Conchoidal |
|- | |- | ||
| Hardness || 7 | | Hardness || 7 | ||
|- | |- | ||
| − | | Optic nature || | + | | Optic nature || Uniaxial + |
|- | |- | ||
| Refractive index || 1.544 - 1.553 | | Refractive index || 1.544 - 1.553 | ||
Latest revision as of 19:03, 21 December 2006
| Ametrine | |
|---|---|
| Chemical composition | Silicon dioxide SiO2 |
| Crystal system | Trigonal |
| Habit | Prismatic |
| Cleavage | Poor |
| Fracture | Conchoidal |
| Hardness | 7 |
| Optic nature | Uniaxial + |
| Refractive index | 1.544 - 1.553 |
| Birefringence | 0.009 |
| Dispersion | 0.013 |
| Specific gravity | 2.63 - 2.65 |
| Lustre | Vitreous |
