This Specimen has been sold.
8.6" Wide Quartz Crystal Cluster With Large Points - Brazil
This is a beautiful cluster of quartz crystals from Brazil. The crystals are all in excellent condition and have undergone no polishing. The cluster weighs 6.5 lbs and has a naturally aesthetic presentation that doesn't require a display stand.
Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.