5x4-11x6mm Double Terminated Quartz natural crystal beads 15 inch 42 pieces

Double Terminated Quartz Crystals have a highly vitreous luster on these colorless Crystal Quartz beads which are transparent to semi-transparent show black internal characteristics. These straight drilled Double Terminated Quartz gems resemble Herkimer Diamond Quartz in shape. These Quartz beads are Piezoelectric which means that they transforms Energy into Light - Heat or Electric Voltage which was the very reason Scientists in the 1950`s used Quartz as a transmitter in electric circuitry.