Chalcedony- Chalcedony is a silica form of mineral. It consist of a waxy luster with a wide range of colors. Chalcedony is soluble under low temperature. Germany is the largest processing center of chalcedony in the world, Chrysoprase is found in Poland, Australia. Tiger’s eye is available in South Africa, Namibia. Good quality chalcedony mineral deposits are also seen in USA and India too. Chalcedony is an important stone used for ornamental purpose. Chrysoprase found in apple-green shade comes in higher price as compared to other varieties.