A sparkly rainbow Silicon Carbide specimen. Rainbow Carborundum is a crystal, with black spiked crystals, gorgeous rainbow-like luster, iridescent colors of green, blues, purple, pink, yellow, etc. The brown to black color results from iron impurities. Carborundum is known to be a master healer and a type of semi conductor.

Dimensions: 10.5" X 7.5" X10.5"