Quartz is the second most abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2.
Pure quartz, traditionally called rock crystal (sometimes called clear quartz), is colorless and transparent (clear) or translucent. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others.
Our Quartz minerals for sale come from several countries: Brasil, Canada, USA, Africa, China, Spain and Morocco. We present many different quartz varieties that should satisfy what you are looking for. Even if you don't plan on buying anything, you should enjoy the pictures!