Masive 22" Quartz Crystal Cluster - Madagascar
This is a huge, beautiful cluster of quartz crystals, from Madagascar. The widest crystal is 1.3" and the faces of the crystals, are for the most part, clean and clear. There are hundreds of small and large quartz crystals intricately intertwined. The entire cluster measures 22" long by 15" wide, weighs 75 lbs.
Silicon Dioxide, also know 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.