| Chemical
Composition |
An
oxide of magnesium, aluminum, silicon,
and boron, with hydroxyl. |
| Color |
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 |
|
|
|
