Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone comes in a wide variety of colors.
Color: Green, Pink, Blue, Red.
Luster: Vitreous
Associated month: October
Crystal system: Hexagonal crystal system
Hardness (Mohs hardness scale): 7 – 7.5
Mineral class: Tourmaline
Color: Green, Pink, Blue, Red.
Luster: Vitreous
Associated month: October
Crystal system: Hexagonal crystal system
Hardness (Mohs hardness scale): 7 – 7.5
Mineral class: Tourmaline
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