Fluorite

Minerva No. 1 mine, Ozark-Mahoning group,

Cave-In-Rock, Hardin County,

Illinois, USA

(5cm from corner to corner diagonally)

Ex C. R. Stum

Ex Antonio Nazario

Photo by Tomer Shapira

Here's an awesome large miniature Fluorite from the Minerva No 1 mine in Illinois. There is a lot going on in here, from the glassy luster to the sharp zoning and the neat inclusions. This classic locale has produced some of the nicest American fluorites out there.