Multicolor Massive Tormalina Thread

The Tormalina is an aluminum borosilicate, belongs to the cyclosilicate group and crystallizes in the trigonal system.

Depending on the quantity of metals in the main crystalline reticle, the tormalines are among the gems that have more colors in absolute. The colors vary from pale pink, to intense red, to orange, to yellow; from green to blue, to be colourless or even matte black. Sometimes more colors can be present in the same crystal.