JASPM-B-01 Origin: Brazil Grade: A Dimensions: From 20 to 40mm Weight: Between 15 and 30g Origin: Australia Grade: A = good Raw mookaite jasper stone of 20-40mm Sold individually. Patterns and colors may vary from one stone to another. The incredible feature of jasper is that it comes in many finishes. Some have been identified very recently. All varieties have many colors with different properties, virtues, and various associated astrological signs. Jasper can have several appearances. It is a sedimentary rock containing 80 to 95% silica. Jasper is a variety of microcrystalline quartz and may also contain clay, calcite, pyrolusite, or hematite.