Beryl
What is Beryl?
Beryl is a mineral that comes in various colors and is often found in Colombia, Brazil, and Russia. It’s primarily used as a gemstone and is popular for its range of colors including green, blue, and yellow.
Beryl is a versatile gemstone that comes in a range of colors including green, blue, and yellow. Its unique appearance and color make it a popular choice for jewelry and decorative items, especially beads and pendants.
| Chemical Classification | Inorganic - Silicate (Beryl) |
| Color | Varies by type: emerald (green), aquamarine (blue), morganite (pink), heliodor (yellow), and others. |
| Streak | White |
| Luster | Vitreous. |
| Transparency | Typically transparent to translucent. |
| Occurrence | Brazil, Colombia (especially for emeralds), and Madagascar. |
| Formation | Beryl typically forms in pegmatites and certain metamorphic rocks. |
| Diaphaneity | Transparent |
| Cleavage | Perfect in one direction |
| Mohs Hardness | 7.5 - 8. |
| Specific Gravity | Approximately 2.63 - 2.91. |
| Diagnostic Properties | Hexagonal crystals, various colors. |
| Chemical Composition | Be3Al2(SiO3)6 |
| Pleochroism | Weak to distinct, depending on the variety. |
| Crystal System | Hexagonal |
| Optical Properties | Biaxial (-) |
| Refractive Index | 1.577 - 1.583 |
| Birefringence | 0.006 |
| 2V angle | Measured: 58° to 63° |
| Dispersion | 0.014. |