“Rhombic calcite overgrowths on complex scalenohedrons shows less red-orange fluorescence than the cores. Medium-wave UV light, response is similar under SW and LW UV but fainter. Overgrowth crytals are 4 cm.”

“Rhombic calcite overgrowths on complex scalenohedrons with quartz. Overgrowth crytals are 4 cm.”

“Rhombic calcite overgrowths on complex scalenohedrons shows less red-orange fluorescence than the cores. Medium-wave UV light, response is similar under SW and LW UV but fainter. Overgrowth crytals are 4 cm. Re-edited, hi-res version of Mindat.org Photo of the Day - 11th Oct 2013.”