Scientific Properties of Jasper:Stone Type/Family: SilicatesCrystal System: TrigonalChemical Composition: SiO2 Silicon Dioxide with various inclusions/impuritiesJasper is a member of chalcedony family.Color: Multi-colored, Solid. Yellow, Orange, Brown, GreenHardness: 6.5 - 7.0Source of Crocodile Jasper: Africa, Madagascar