Fluorite - Minerva No.1, Cave in Rock, Illinois, USA
 
 Very intense color! 9 cm x 6 cm group of fluorite from the Minerva Pit, Cave in Rock, Illinois, USA. The group, consisting of three crystals up to 6 cm on the edge, has a good build up. The piece is particularly attractive because of the purple phantoms that shine through the ocean-blue of the fluorite that creating a asociation to the depths of the ocean.