This listing is for one of these Natural Black Tourmaline Crystal pieces, each piece seen in these photos weigh roughly 80g
These Tourmaline Crystals are fragile so must be handled with care! Many contain some Quartz and Mica traces too.
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.
Usually, iron-rich tourmaline's are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmaline's are almost any color: blue, green, red, yellow, pink, etc. Rarely, it is colorless. Bi-colored and multicolored crystals are common, reflecting variations of fluid chemistry during crystallization.
Average Piece Dimensions:
Size: 55m x 35mm