Fluorite and Sphalerite with Quartz and Galena, Minerva No. 1 Mine, Cave-in-Rock District, Southern Illinois, ex. Roy Smith Collection, Small Cabinet, 4.2 x 7.5 x 8.2 cm, $450. Online Dec. 12.
Group of light lilac fluorite crystals to 2 cm on lustrous Black-jack sphalerite matrix. Nice three dimensional form and specimen is in excellent condition. Ex: Philadelphia Academy of Natural Sciences (ANSP #26724).