Smoky Quartz 7x8mm Faceted Round Nugget - 15-16 Inch Kambaba Available in a wide array

Available in a wide array of colors

though treated stones have more potassium in them than before

Turquoise is one of the oldest known gemstones

Gem Silica occurs in a vivid blue green color due to the presence of copper in the stone and is free of inclusions of other minerals

Ruby is a precious gemstone known for its deep red color

Smoky Quartz 7x8mm Faceted Round Nugget - 15-16 Inch Kambaba Available in a wide arraySmoky 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.