Polished Black Tourmaline Freeform Dragon’s Blood If struck sharply against steel

If struck sharply against steel

meaning it forms from the alteration of primary minerals

serene hues

Mangano Calcite

Polished Black Tourmaline Freeform Dragon’s Blood If struck sharply against steelThis 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