PO-01 Poster - Symbols of Colorado: Mineral, Gem, Rock and Fossil Download Publication Details This full-color poster is illustrated with photographs of the state mineral (Rhodochrosite), state fossil (Stegosaurus), state rock (Yule Marble), and state gem (Aquamarine). Digital PDF download. PO-01D Citations Scott, Larry. “PO-01 Poster - Symbols of Colorado: Mineral, Gem, Rock and Fossil.” Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources, 2005. https://doi.org/10.58783/cgs.po01.qkfh2253. CGS Publications. https://coloradogeologicalsurvey.org/publications/symbols-mineral-gem-rock-fossil-colorado-poster/.