PERDOT IN BASALT FORMED IN THE EARTH’S MANTLE AT LEAST 25 MILES DEEP. THIS SPECIMEN IS FROM THE BIG ISLAND OF HAWAII FROM THE ERUPTION OF MT. KILAUEA. From the collection and photographed by Dan Snow Share this: Share on Pinterest (Opens in new window) Pinterest Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related