Quartz
Quartz is the most abundant mineral on Earth, and it is cherished as "crystal" for its transparency and the beauty of its crystalline structure. It is also popular for decorative purposes, as well as in Feng Shui and spiritual practices.
Colorless and transparent Quartz
Basic Information
| Chemical Formula | SiO₂ |
|---|---|
| Classification | Hexagonal (Trigonal) |
| Hardness | 7 (Mohs scale) |
| Specific Gravity | approx. 2.65 |
| Crystal Habit | Varied, including clusters and geodes |
Characteristics
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Abundant varieties: Exists in numerous colors and forms, such as amethyst, citrine, and smoky quartz.
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Inclusions: "Rutilated quartz," which contains inclusions such as rutile or tourmaline, is popular.
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Color variations: Colorless Gray Blue tones
Varieties & Aliases
- Variety Rutilated Quartz: Contains needle-like rutile inclusions
- Variety Dendritic Quartz: Characterized by dendritic (fern-like) patterns
- Variety Phantom Quartz: Also known as "mountain-in-crystal"
Note: As many stones are crack-treated or color-treated, distinguishing them from natural specimens is important.