Black Tourmaline on Metal Base

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 colours. This tourmaline is also on a natural Quartz Matrix

Each piece weighs approximately 1kg.

These pieces are graded by weight so the size will vary considerably, but the average size is 10cm x 15cm.

Origin: Brazil