Jasper is a versatile, decorative member of the quartz family that is well known for its interesting patterns. Jasper is often named for either its pattern or for its location of origin. Please be advised, that since jasper comes in so many varieties, its nomenclature is not entirely established. Many jaspers have multiple names. Jasper was one of the 12 gems set into the foundations of the city walls of Jerusalem, and is considered a highly protective stone by many of today's crystal healers. Other members of the quartz family include agate, carnelian and onyx. As jasper is a natural material, colors and patterns will very from bed to bead.