Smoky Quartz
Smoky quartz is a variety of quartz containing trace amounts of aluminum that has turned brownish-black due to exposure to natural radiation. It is characterized by its muted color palette, and is often called "brown quartz," or "Morion" when the color is particularly dark.
Smoky Quartz
Basic Information
| Chemical Formula | SiO₂ |
|---|---|
| Classification | Hexagonal crystal system |
| Hardness | 7 (Mohs scale) |
| Specific Gravity | 2.65 |
Features
- Quartz containing trace amounts of Al that turned brownish-black from natural radiation.
- Deep, black specimens are known as "Morion."
- Also known as "Cairngorm."
- Can sometimes be heat-treated to become citrine.
Note: Smoky quartz is also popular as a "power stone" for stress relief.