Quartz is one of the most abundant minerals on Earth, composed of silicon dioxide, with the chemical formula SiO₂. This mineral is known for its great diversity of varieties and colors, ranging from colorless quartz (pure quartz) to pink, smoky, amethyst quartz, and many others. Its transparency or translucency, combined with its vitreous luster, makes it a highly prized mineral in jewelry, as well as in industrial applications.
Quartz crystallizes in the hexagonal system, often forming six-sided prisms terminating in pyramids. It can occur as isolated crystals, crystalline clusters or massive formations. With a hardness of 7 on the Mohs scale, quartz is a tough, durable mineral, used both for collecting and in a variety of technological applications.
