4600 Humboldt StreetDenver , CO , 80216 39° 46' 44.8392" N, 104° 58' 14.4372" W
The largest mineral, fossil, and gem show in the USA has just over 3 miles of minerals, fossils, gems, jewelry, and related items on display and for sale. So when you visit, be sure to wear sneakers! Free parking and free entry. Food vendors on site.