Quartz is a chemical compound consisting of one part silicon and two parts oxygen (SiO₂). It is the most abundant mineral found on our Earth's surface. It is widely distributed and plentiful in all parts of the world, able to form at all temperatures. Pure quartz is clear. Howveer, the color can vary due to impurities: white, gray, purple, etc.

Quartz is physically and chemically resistant to weathering. When quartz-bearing rocks become weathered and eroded, the grains of resistant quartz are concentrated in the soil, in rivers, and on beaches. The white sands typically found in river beds and on beaches are usually composed mainly of quartz.

• Pure quartz is clear. However, when impurities are present, quartz occurs in virtually every color.

  • Common colors are clear, white, gray, purple, yellow, black, pink, green, and red.

• It's known for its glassy luster and crystal form.

• It may have colorless streaks.