| Beryl | |
|---|---|
 Aquamarine, a blue-green variety of beryl from Tanzania. Specimen is approximately 2 inches (5 centimeters) across. | |
| Uses | Gemstones, the primary ore of beryllium. |
| Color | bluish green, light yellow, golden yellow, pink, white, colorless |
| Streak | colorless |
| Luster | vitreous |
| Diaphaneity | transparent to translucent |
| Cleavage | imperfect |
| Luster | vitreous |
| Hardness | 7.5 - 8 |
| Specific Gravity | 2.6 - 2.8 |
| Distinguishing Characteristics | hexagonal crystal form, green color, hardness |
| Crystal System | hexagonal |
| Chemical Classification | silicate |
| Chemical Composition | beryllium aluminum silicate , Be3Al2Si6O18 |
Beryl is a transparent rock that comes in the colors of green, blue yellow, colorless, and red. "Beryl" comes from the Greek word "beryllos" which means "precious blue-green color of sea water stone". Some minerals that are beryl include Aquamarine, Emerald.
Yellow beryl from Minas Gerais, Brazil. Specimens are approximately 1/4 inch to 5/8 inch (.64 centimeter to 1.6 centimeters) across
Beryl from Bedford, New York. Specimen is approximately 5 inches (12.7 centimeters) across
Beryl crystal in pegmatite from Quadville, Ontario, Canada. Specimen is approximately 3 inches (7.6 centimeters) across.
Morganite, a pink variety of barite from Minas Gerais, Brazil. Specimen is approximately 1 inch (2.5 centimeters) across
Cesium-bearing beryl from Madagascar. Specimen is approximately 1 inch (2.5 centimeters) across.