Beryls Facts
Beryls Facts
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Beryl Properties
| Chemical Composition | It is beryllium aluminum silicate and the chemical formula is Be3Al2Si6O18. |
| Colours | Colourless, green, sea blue, violet, pink, red, blue, yellow, golden, gray, purple, brown and white. |
| Streak | White |
| Variety | Emerald, Aquamarine, Morganite, Heliodor, Goshenite, Bixbite |
| Specific Gravity | 2.36-2.91 |
| Refractive Index | Varies between 1.57-1.59. |
| Luster | Viterous. |
| Solid State | Transparent to translucent. |
| Fractures | Conchoidal. |
| Bi-refringence | Low – 0.005-0.009 |
| Crystal System | Hexagonal crystal system. |
| Cleavage | Imperfect. |
| Pleochroism | Weak. |
| Dispersion | Low – 0.014 |
| Hardness | 7.5-8 Mohs |
| Heat Sensitive | Very high. |
| Tenacity | Brittle |
| Precautions | All general gemstone precautions to be taken. Special attention to be given at the time of repair work. |
| Enhancement | Mostly all the gemstones are enhanced to improve the colour. |
| Source | Egypt, Austria, Africa, Pakistan, Ireland, Germany, Brazil, Russia, Colombia, Zambia, Mozambique, Angola, Nigeria, Mungo, Baltistan, Pakistan, United States of America, South Africa, United Kingdom. |