Quartz

A silicon dioxide SiO2)), a common semi-precious stones in nature is because the label to the German word meaning Thumper whiteness and followed quartz crystal system Hexagon Hexagonal (triple) Trigonal and more crystalline forms of presence in nature in the form of a six-publication format and types of transparent him the advantage glitter glass and there are several different colors of quartz them golden yellow and called citrine Citrine, which is somewhat similar to the golden topaz and exhale yellow where difficult to distinguish them easily may be a quartz purple color and this quality called Jamshet Amethyst is one of the most beautiful species and the most expensive price and sometimes quartz comes colored pink and the so-called Rose quartz It is somewhat similar to stones Alkonzzaat Kunzite with beautiful pink color and there are quartz, smoked Smoky Quartz and features turquoise brown smog italics gray and also made up of three or four colors of quartz crystals may be combined with some such as color purple, green, brown and called Omitrin Ametrine The quartz colorless called crystal Rock Rock Crystal Quartz is one of the solid stone, where the hardness 7, according to him rigidity of the Moho on and has a refractive index ranging from 1.541 to 1.553 and a density of 2.65 g / cm 3 and there are precise quartz crystallization Crypto- Crystalline called Khalikaddon (Calcedona) Chalcedony and exists in several different colors It may be in the form of horizontal bundles and sometimes circular and this quality is categorized into several types, including
Garnet Agate: characterized by the presence of strips or belts of different colors.
Onyx Onyx: Onyx is a black and white strips.
Carnelian Carnelian: Agate color reddish-brown semitransparent.
Krizopras Chrysoprass: Agate color green Tvahi half transparent.
Stone plasma Plasma: dark garnet in color Dark Green.
Blood stone Blood stone or Halauterob (Heliotrope): a green onyx characterized by the presence of the color red or brown spots.