3.10 CT Faceted pink & green color tourmaline loose gemstones from Afghanistan

  

Carat natural faceted cut lot of 2 pink & green color tourmaline loose gemstones. Tourmaline is a crystalline silicate mineral group in which boron is compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium.

Tourmaline is a gemstone and can be found in a wide variety of colors. Color: Black, Green, Pink, Blue, Yellow, Red, White, Purple, Grey, Orange, Brown. Crystal system: Hexagonal crystal system. Hardness (Mohs hardness scale): 7 - 7.5.

Refractive index: 1.616 - 1.65.