9iddbis ((COLEMANITE, CALCITE)), Fluorescent, $10 MINIMUM BID, Boron Open Pit Mine, Boron, Kern County, California, 8.5 x 6 x 4 cm, Cabinet | |
Colorless Colemanite crystals with yellow Calcite. Calcite is bright yellow under SWUV light. ex Jim Minette collection |