Rocks Slabs and Specimens › Keokuck Geode with iridescent brown calcite, rare Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Keokuck Geode with iridescent brown calcite, rare $150.00 Sold Out Both halves 3.75 in diameter, 2 and 3 inches thickthis is the rarest of the keokuck geodes Sold Out Added! Both halves 3.75 in diameter, 2 and 3 inches thickthis is the rarest of the keokuck geodes Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More