Description: This is a rare ISUA slab from Greenland. Along with Nuummite, ISUA Stone is one of the oldest and rarest stones on Earth, found only in the Greenstone supracrustal belt in southwest Greenland. Location: Ivigtut, Greenland Size: 4.7 x 3.8 x 0.6 centimeters Weight: 21.76 grams
