Rocks Slabs and Specimens › Rainbow obsidian Image 1 of 2 Image 2 of 2 Rainbow obsidian $40.00 2.75 x 2 x 1.25 polished rainbow obsidian chunk, 160 gm Add To Cart Added! 2.75 x 2 x 1.25 polished rainbow obsidian chunk, 160 gm Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More