Smoky Quartz 6mm Star Cut Coin - 15-16 Inch hps_10042023 high-silica content

high-silica content

Viking explorers used thin pieces of Iolite as the world’s first polarizing lens to help them determine the exact location of the sun for navigation

soft and glassy stone

sapphires get their various colors from trace elements

Smoky Quartz 6mm Star Cut Coin - 15-16 Inch hps_10042023 high-silica contentSmoky Quartz is a translucent smoky brown or gray variety of Quartz. It ranges from almost completely transparent to an almost opaque brownish to gray crystal. The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the crystal lattice of the stone. Smoky Quartz it the national gem of Scotland, where it was mined since around 300 BCE.