The Colorado Minerals Fossils & Gems Show at the Denver Coliseum is one of the longest-running and most expansive events during Denver Gem Show Week. Spanning ten days from September 11-20, the show fills the historic Coliseum and surrounding grounds with over 200 dealers offering everything from bulk rough and mineral flats to museum-grade fossil specimens and finished gemstone jewelry. The extended run gives wholesale buyers more time to work through inventory and negotiate volume deals without the compressed schedules of shorter shows.
Wholesale buyers will find strong representation across nearly every product category at the Denver Coliseum show. International rough dealers, domestic mineral wholesalers, fossil preparators, and lapidary supply companies all maintain a presence here. The outdoor tent areas tend to offer the best pricing on bulk materials, while indoor booths showcase higher-end specimens and finished goods. Colorado-sourced amazonite, rhodochrosite, and topaz are perennial highlights, alongside imported material from Brazil, Madagascar, and Pakistan.
The Denver Coliseum location on Humboldt Street puts buyers within easy reach of other Denver Gem Week venues, including the National Western Complex and the Westin Westminster. For wholesale operations looking to fill diverse inventory needs in a single trip, the Colorado Minerals Fossils & Gems Show provides the breadth and depth of selection that justifies travel to the Denver market each September.