Tourmaline
Complex borosilicate
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Tourmaline is a group of complex borosilicate minerals famous for their wide range of colors. Watermelon tourmaline shows pink centers with green rims. The most common variety, schorl (black), accounts for 95% of all tourmaline.
| Sistema Cristalino | Trigonal |
| Classe Mineral | 09 Silicates |
| Dureza Mohs | 7.0-7.5 |
| Gravidade Específica | 2.82-3.32 |
| Cor | Black, green, pink, blue, watermelon |
| Brilho | Vitreous |
| Traço | Colorless |
| Clivagem | None |
| Fratura | Conchoidal to uneven |
| Transparência | Transparent |
| Hábito Cristalino | Prismatic with triangular cross-section |
Dureza Mohs
Mohs Hardness: 7,0 – 7,5
1 Soft10 Hard
Sistema Cristalino
TrigonalExplore on Science FYI
Frequently Asked Questions
What is the hardness of Tourmaline?
Tourmaline has a Mohs hardness of 7.0-7.5.
What crystal system does Tourmaline belong to?
Tourmaline crystallizes in the Trigonal crystal system.
What color is Tourmaline?
Tourmaline is typically Black, green, pink, blue, watermelon.
What type of luster does Tourmaline have?
Tourmaline exhibits a Vitreous luster.
What is the chemical formula of Tourmaline?
The chemical formula of Tourmaline is Complex borosilicate.