A rare and esoteric mineral masterpiece. Nuummite is a gently iridescent black metamorphic stone found in Nuuk, Greenland. Initially formed deep within the earth it was ejected by volcanic activity during the Archean Eon, then metamorphosed twice into its current form. ~ 2.25" diameter, .5 lbs. Variation is to be expected in these natural, polished, pieces of our planet.