JASPER   Jasper is an ornamental rock composed mostly of chalcedony (microcrystalline quartz) in association with other minerals, which give it colorful bands and patterns. It is opaque and colored red, yellow, brown, or off-white to gray. Jasper is usually formed by precipitation from superheated fluids, or quartz sand deposits that are subjected to tremendous heat and pressure. Jasper is usually found in association with agate and chalcedony. Jasper has long been used as an ornamental stone because it combines beauty and strength more perfectly than any other stone. Jasper is a type of quartz belonging to the chalcedony family, and along with its attractive colors, it has an inherent toughness (hardness 6.5 to 7.0) that makes it unique to any other stone produced in the world. Exotic Rainbow