Crystal Quartz Beads

Rock Crystal or Crystal Quartz beads are the colorless species of Quartz composed of pure SiO2. The name comes from the Greek word for `ice` as it was believed that rock crystals were frozen eternally. Crystal Quartz is commonly included with needles from neighboring elements such as goethite (star quartz), gold, pyrite, copper, rutile, and tourmaline. One of the most brilliant quartz varieties and sometimes used as a diamond substitute. The gem is mined in Brazil, Africa, South Africa, Uruguay, US, Canada, India, Madagascar, Mexico, Myanmar (Burma), Namibia, Sri Lanka, and Tanzania. Quartz is a term that includes both well crystallized and compact forms of silica. In 1823 J.J. Berzelius decomposed quartz and discovered it is the chemical compound of oxygen and a new element, silicon. After it was realized that all those varieties are chemically the same substance, silicon dioxide, SiO2, they were divided into groups. The crystalline forms are commonly called macrocrystalline quartz, while the dense and compact forms are either called cryptocrystalline or microcrystalline quartz. It has been found that the causes for the differences in structure, physical properties and visual appearance lie primarily in the environmental conditions during the formation of the minerals. QUARTZ VARIETIES = Macrocrystalline Quartz: Crystal Quartz (Rock Crystal), Amethyst, Ametrine, Aventurine, Blue Quartz, Citrine, Eisenkiesel, Milky Quartz, Pink Quartz, Prase, Prasiolite, Rose Quartz, Smoky Quartz, Tiger's, Hawk's, and Cat's Eye. Microcrystalline Quartz: Agate, Carnelian, Chalcedony, Chrysoprase, Onyx, Plasma, Sard, Chert, Flint, Jasper, Heliotrope, and Plasma.

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Set Ascending Direction

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