Fluorite, Calcite – Minerva No. 1 Mine, Illinois, USA

 Transparent, highly lustrous fluorites with edge lengths of up to 4 cm form this characteristic specimen from Illinois, USA.
 The violet-blue zones stand out against the yellow core of the crystals. Transparent and lustrous calcite crystals further adorn this colorful, highly sought-after display specimen from the famous Minerva #1 mine.
 The underside is cut.