Beryl (Emerald)
Be3Al2(SiO3)6
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Beryl is a beryllium aluminum cyclosilicate with several gem varieties: emerald (green, colored by chromium), aquamarine (blue), morganite (pink), heliodor (yellow), and goshenite (colorless). Emerald has been one of the most prized gemstones for thousands of years.
| Crystal System | Hexagonal |
| Mineral Class | 09 Silicates |
| Mohs Hardness | 7.5-8.0 |
| Specific Gravity | 2.63-2.92 |
| Color | Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor) |
| Luster | Vitreous |
| Streak | Colorless |
| Cleavage | Poor {0001} |
| Fracture | Conchoidal to uneven |
| Transparency | Transparent |
| Crystal Habit | Prismatic hexagonal |
Mohs Hardness
Mohs Hardness: 7.5 – 8.0
1 Soft10 Hard
Crystal System
HexagonalFrequently Asked Questions
What is the hardness of Beryl (Emerald)?
Beryl (Emerald) has a Mohs hardness of 7.5-8.0.
What crystal system does Beryl (Emerald) belong to?
Beryl (Emerald) crystallizes in the Hexagonal crystal system.
What color is Beryl (Emerald)?
Beryl (Emerald) is typically Green (emerald), blue (aquamarine), pink (morganite), yellow (heliodor).
What type of luster does Beryl (Emerald) have?
Beryl (Emerald) exhibits a Vitreous luster.
What is the chemical formula of Beryl (Emerald)?
The chemical formula of Beryl (Emerald) is Be3Al2(SiO3)6.