A striking fluorite specimen with colorful phantoms from this great locality - Cave-in-Rock, Illinois, United States. The crystals are glassy lustrous and light reflective. They have from rich yellow cores to saturated purple at the rims. The cubes are razor sharp and transparent. The real beauty in this specimen is the purple phantoms which have very sharp and geometrical shape. It displays attractively all over 360 degree. Some small damages.

Astonishing!