Red Jasper Red Jasper is an opaque, microcrystalline variety of Quartz with large, grainy crystals rather than the fibrous layers of Chalcedony or Agate.It occurs in nodules or as fillings in fissures and may be found all over the world. Its vibrant red to terracotta red-brown color is due to high iron content, and may contain other minerals or impurities that create rich patterns. Red Jasper is a major component in Brecciated Jasper, Poppy Jasper and Rose-eye Jasper, and is prominent in many area specific Jaspers, such as Cherry Creek Jasper and Mookaite Jasper. Jasper Gemstone Jewelry Care and Cleaning for cleaning your Jasper, simply use soapy water and a soft cloth. Be sure to rinse well to remove soapy residue.As with most gemstones, ultrasonic cleaners and steamers are not recommended.Always remove any jewelry or gemstones before exercising, cleaning or engaging in harsh physical activities such as sports.Jasper can be easily scratched by harder substances, so it should be stored away from other gemstones.It is best to wrap gemstones in soft cloth or place them inside a fabric-lined jewelry box.