28 carat natural tourmaline Dimension:30*11*8mm Shipping worldwide Natural No treatment
Tourmaline is a crystalline mineral that comes in a variety of colors, including black, green, pink, and blue. It is often used in jewelry and is known for its unique and vibrant coloration. Tourmaline is also used in some industrial applications and has piezoelectric properties, which means it can generate an electric charge when pressure is applied to it.
