Tales of Tolgard
Malachite is a green ornamental stone with striations of darker green. It is related to azurite, which is bluer in hue, and is usually cabochon cut to provide poorer folk with jewelry. It is (falsely) rumored to prevent falls, and to help sales is often set on rings of feather falling and the like as an ornament. Its true magical use is as a material component in priest spells of the elemental sphere and wizard spells concerned with ice, cold, fire, and heat.