Aquamarine
UNB-2017-0238Minerals » Silicates » Cyclosilicates » Beryl
Description
Sample of greenish-blue/colourless six-sided subhedral Aquamarine. Faint striations and vitreous lustre.
Aquamarine (Be3Al2Si6O18) is a variety Beryl that is usually greenish-blue in colour but in rare occurrences can be colourless. Lustre is vitreous and streak is colourless. Hardness is 7 1/2 to 8. Beryl usually occurs as six-sided prism with striations along the length of the crystal faces.
Specifications
| Object name | Aquamarine |
|---|---|
| ID | UNB-2017-0238 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Silicates Sub-groups: Cyclosilicates » Beryl |
| Composition |
|
| Origin | Unknown |
| Pieces | 1 |
| Partial | No |
| Measurements |
|
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.