Jasper is a versatile, decorative member of the quartz family that is well known for its interesting patterns. Jasper is most often named for its pattern: cappuccino jasper, leopard skin jasper and picture jasper are just a few examples. 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 todays crystal healers. Other members of the quartz family include agate, carnelian and onyx.