Wieliczka Mine, Poland - 4.1 x 5.4 cm

Locality: Wieliczka Mine, Wieliczka, Małopolskie, Poland
Dimensions: 4.1 x 5.4 cm

Description: Colorless cubic halite crystals to 3 cm. This mine has been in operation for over 700 years. It contains over 2100 chambers and 4 chapels decorated entirely of salt. Unesco lists it as one of the top 12 world attractions.