Fluorite, Rosiclare Level, Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1993, Ron Roberts Collection F-15, Miniature 3.5 x 3.5 x 6.5 cm, $200. Online September 14.
Sharply zoned blue, yellow and purple fluorite crystals to 3.5 cm with abundant chalcopyrite inclusions. Ex: Tom Wiesner Collection of Decatur, IL. In very fine condition.