Dravite
brownyellow · Tourmaline family
| Also known as | Tourmaline (Tourmaline family) |
|---|---|
| Colour | Brown, Yellow |
| Mohs hardness | 7.0–7.5 |
| Lustre | Vitreous, sometimes resinous |
| Streak | White |
| Crystal system | Trigonal |
| Transparency | Translucent to opaque |
| Cleavage | Indistinct |
| Fracture | Uneven, small conchoidal |
| Specific gravity | 3.06+0.20–0.06 |
What is Dravite?
Tourmaline is a crystalline silicate mineral group in which boron is compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. This gemstone comes in a wide variety of colors.
How to identify Dravite
- Lustre: Vitreous, sometimes resinous.
- Hardness: Mohs 7.0–7.5 — hard enough to scratch glass.
- Streak: White.
- Habit: Trigonal crystal system.
Dravite in different forms
Stones often confused with Dravite
Frequently asked questions
How hard is Dravite?
Dravite is Mohs 7.0–7.5 on the hardness scale.
What colour is Dravite?
Dravite is typically brown, yellow (Most commonly black, but can range from colorless to brown, red, orange, yellow, green, blue, violet, pink, or hues in-b).