Tektite Natural 8mm Round - 15-16 Inch Terra Agate Tourmaline is unusual in that

Tourmaline is unusual in that it is both pyroelectric and piezoelectric

Usually found near copper deposits

It is known for its colors to to dark green and mustardy yellow

Zoisite occurs as prismatic

second only to Diamond

Tektite Natural 8mm Round - 15-16 Inch Terra Agate Tourmaline is unusual in thatTektite is a natural glass formed by meteorite collisions with Earth. When moving through the Earths atmosphere, a meteorite builds up heat that is then released into the terrestrial rocks with which it collides, causing the rocks to melt and combine with the remains of the meteorite, forming Tektite. It is composed of silicon dioxide, aluminum oxide and other metal oxides.