Spinelle (noir) Sphalérite / Sphalerite La tourmaline est très utilisée

La tourmaline est très utilisée en joaillerie

Shape: Square

Beautiful natural nephrite jade "Circle of Life" necklace from British Columbia mounted on a black fabric cord

It has a high hardness (8 on the Mohs scale) and its chemical composition is very close to that of corundum (ruby and sapphire)

The bands of this agate recall various landscapes

Spinelle (noir) Sphalérite / Sphalerite La tourmaline est très utiliséeSpinel is an increasingly popular gemstone. It has a high luster and it comes in a wide variety of colors like red, blue, purple, pink, and black. It has a high hardness (8 on the Mohs scale) and its chemical composition is very close to that of corundum (ruby and sapphire). Since 2016, spinel has been added to peridot as the birthstone for August. Black spinels are a dazzling black and are often used in jewelry. Variety: Spinel Black color