Covellite Free-form Designer cabochon. This rare and spectacular material comes from Butte, Montana. The metallic blue Covellite is highlighted by silver swirls and streaks of Dignite, and bright gold specks of Pyrite. The Covellite will tarnish with a beautiful magenta-purple haze, and in bright light or sun light it displays flashes of magenta. This designer cut, high polish cabochon will make a truly outstanding pendant when set in silver or gold. It measures 35mm x 25mm x 4mm w/ 2mm girdle. It weighs 45 carats.