According to the Mohs scale, a hardness of Jasper is 6.5-7.

An adequate amount of mineral impurities make jasper opaque. Typically, jasper is spotted or striped, and multicolored.

Like agate, a jasper mineral is originated from chalcedony (a type of quartz) and features iron oxides, hydroxides, and other impurities, which create unique color combinations: yellow, brick-red, brown, mottled green, and, rarely, blue. Name Jasper is derived from the old French language that means “spotted” or “mottled”.