QUARTZ
Quartz is a hard crystalline, Silicon dioxide is the proper chemical name for quartz. It is the most common mineral on Earth, making up 12% of the Earth’s crust by volume, and is used in a wide variety of applications including jewelry, scientific research, manufacturing, and building , and most people interact with something containing quartz at least once a day, since the mineral is so prevalent in daily life. Because of its many uses, quartz is also a very important mineral, and some rare varieties of quartz are considered to be quite valuable In jewelry, quartz in many forms is abundantly used. Milky quartz or Chalcedony can be used to make beads, cameos, and distinctive rings, while clear crystalline quartz is often cut into faceted gemstones to ornament necklaces, rings, and bracelets.