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Kornerupin
| Chemical Composition |
An oxide of magnesium, aluminum, silicon, and boron, with hydroxyl. |
| Colour |
Usually shades of green or brown. |
| Refractive Index |
R.I 1.66-1.70. |
| Durability |
Hardness 6-7. |
| Crystal Structure |
Orthorhombic |
| Specific Gravity |
3.27-3.45. |
| Sources / Occurrence |
Kenya, Myanmar (Burma), Sri Lanka, Canada. Kornerupine is a rather scarce collector's item and very rare in asteriated (star) material. |
| Varieties |
Cat’s eye Kornerupine | | |
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