It's a Beautiful Natural Faceted Emerald Cut Dark Blue Tourmaline Loose Gemstone From Afghanistan

WEIGHT(ct): 7

Size : 14.3x7.5x6.7 mm

CLARITY: SI

TREATMENT: NONE

ORIGIN: Afghanistan

CERTIFICATE: IF REQUESTED

Whats is Tourmaline ?

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. This gemstone can be found in a wide variety of colors.

Color: Green, Black, Blue, Red, Pink, White, Yellow, Purple, Brown, Orange, Grey
Luster: Vitreous
Associated month: October
Crystal system: Hexagonal crystal system
Hardness (Mohs hardness scale): 7 – 7.5
Transparency: Opaque, Transparent