Garnet consists of a range of different forms of silica (silicon dioxide second SiO2) semi-amorphous and that the most famous Galsdona (Chalcedony). It consists most types of garnet pieces of several different colors come in the form of lines or Ribbons are often opaque, but some of them can be transparent or semi-transparent and has a waxy luster (waxy luster). Garnet and vary between white, gray and black lines may be red or pale yellow or blue in some species as a result of the presence of impurities such as iron oxide and manganese oxide. And different types of garnet in lines patterns may be parallel or random or in the form of circles spread from the center to the outside of the degree of hardness has seven degrees.
