Minerva #1 Mine, Cave-in-Rock District, Hardin Co., Illinois, USA
Thumbnail, 3.2 x 3.0 x 2.7 cm
Sharp and lovely, this Fluorite cluster is absolutely classic for Minerva. The color-zoning is magnificent, with the crystals having yellow cores, surrounded by deep purple and then light blue. The luster of the finely-stepped faces is very good, and the overall aesthetics are excellent. The three main crystals average about 1.2 cm in size. Even better in person.