Emerald Gemstone Details
History and Origin
Emerald is a variety of the mineral beryl that is colored green by chromium and vanadium. It has been prized for its beauty for thousands of years. The oldest known emeralds come from Zimbabwe and are over 2.97 billion years old. Ancient civilizations, including the Egyptians, Greeks, and Romans, all prized emeralds and used them in jewelry and other decorative objects.
Physical Properties
- Color: Green
- Hardness: 7.5 - 8 on the Mohs scale
- Specific Gravity: 2.72 - 2.78
- Luster: Vitreous
- Transparency: Transparent to translucent
Optical Properties
- Refractive Index: 1.565 - 1.602
- Birefringence: 0.005 - 0.009
- Dispersion: 0.014
Elementary Chemical Analysis
Emeralds are beryllium aluminum silicate minerals that contain trace amounts of chromium and vanadium that give them their green color. Their chemical formula is Be3Al2(SiO3)6. The amount of chromium and vanadium in the mineral can vary, which affects the intensity of the green color.
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| Natural Emerald Jewelry |
Uses
Emeralds are primarily used as gemstones in jewelry. They are a popular choice for rings, necklaces, and earrings due to their beauty and durability. They are also used in some industrial applications, such as in the manufacture of electronic components and abrasives.
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