Tourmaline is unusual in that it is both pyroelectric and piezoelectric
Tiger Eye is a macrocrystalline Quartz stone with bands of rich golds and browns
Mica is a mineral name given to a group of minerals that are physically and chemically similar
depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate
and other colorful materials
Labradorite 8x12mm Top Drill Faceted Tear Drop - 15-16 Inch Multi Rhutilated Quartz Tourmaline is unusual in thatLabradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This effect is known as labradorescence, taking its name from the stone. Labradorite is usually gray to green, dark gray, light gray or black. It was discovered in Labrador, Canada in 1770 and named for the area, though it is referenced as a highly revered stone in much older Inuit tribal legends.