Jasper is a fine grained variety of Chalcedony. In the circle of jewellery trade, jasper is also recognized by the names as, Stone Canyon, Leopard Skin, Poppy and Opelite. In nature Jasper occur as microcrystalline quartz which are made up of over twenty percent of foreign materials. In fact, the color and the overall appearance of the stone are determined by the presence of these foreign materials. ...– Mark