Fluorite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1993, Koster Collection, Medium Cabinet 5.5 x 13.5 x 17.0 cm, $1200. Online 3/18. SOLD.
Group of zoned purple and yellow fluorite with superlative hoppered/mosaic morphology. This is one of the finest examples of this type I have handled from the Minerva #1 Mine. Beautiful and well crystallized to all sides. Note characteristic etched surface on yellow/purple interface. Condition: excellent. Provenance: acquired by Ross Lillie in district ca. 1993; sold to Sam & Ann Koster ca. Tucson Show 1994; sold to Ross Lillie in Houston February, 2016. Excellent specimen.