Polished Black Tourmaline Freeform Dragon’s Blood with each layer representing a

with each layer representing a different pulse of mineral deposition

Locality: El Potosi Mine

For best results viewing UV reactivity

providing a sharp scientific contrast to the rounded fluorite shapes

A copper silicate mineral

Polished Black Tourmaline Freeform Dragon’s Blood with each layer representing aThis is a polished black tourmaline Freeform. It's a naturally dark, opaque black color. You'll find that it has a smooth feel from being polished. Its hard to take a good picture due to the polish. An interesting fact about tourmaline is that it's a pyroelectric and piezoelectric mineral. This means it can generate an electrical charge when heated or when subjected to pressure. This property was actually known for centuries, with early Dutch traders