Colorado Mineral Society Patch

The Colorado Mineral Society

Meetings and Upcoming Area Events


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Here is an updated list of all (well, the selected ones hopefully of most interest to most of you!) the geology, mineral, fossil, and nature events that I know about over the next few months. It begins with the "Contin-Tail" outdoor rock show/swap, today through this weekend; a geology/history of North Table Mountain hike Saturday morning next week (Aug. 21) led by Jeffco Open Space (no, not by me!), and all the shows related to the Denver Gem and Mineral Show in September.

Enjoy--these events, and the last month(s) of summer!

Pete Modreski

Coming events, August 2021 onward

Thurs.-Sun., Aug. 12-15, “Buena Vista Contin-Tail Gem, Mineral & Fossil Show”. At the Buena Vista Rodeo Grounds; no admission charge. Colorado’s longest-running outdoor “rock swap” event. P.S., not this year, but next year, Aug. 11-14, 2022, the Contin-Tail weekend will coincide with Buena Vista’s Gold Rush Days festival, including their famous burro race, plus music, food and other vendors, etc.

Sat., Aug 21, Public hike, Geology and History of North Table Mountain, hosted by Jefferson County Open Space. A “Drop-in Program”, 8 a.m. to 10 a.m., West Trail Head, 4788 Highway 93, Golden CO; no registration required. See the attached flier!

Thurs.-Sun., Aug. 19-22, 9 a.m. – 5 p.m., Woodland Park Rock, Gem and Jewelry Show; 19250 E. US 24 (“between Walmart and Safeway”), Woodland Park. No admission charge

Fri.-Sun., Aug. 20-22, 9 a.m. – 5 p.m., 21st Annual Lake George Gem & Mineral Show, Highway 24, Lake George, CO. No admission charge. Hosted by the Lake George Gem and Mineral Club.

For more information about all these (below, plus others, some of which—not listed here--are wholesale/trade shows only) September mineral and gem shows in Denver, see .

Sept. 10-12, “Mincollect Show”, Hilton Double Tree “Denver*”, 3203 Quebec St. Denver, CO 80207, at M.L.K. Jr. Blvd. & Quebec St. [“not to be confused with another Hilton Double Tree “Denver Central Park”, which is also on Quebec St.] 10-6 Fri. & Sat., 10-5 Sun., free parking & admission.

Sept. 10-13, “2021 Just Minerals and Crystals Event-Denver”. Fri. Sept. 10, 2–9 p.m.; Sat.-Sun. Sept 11-12, 10 a.m.-6 p.m.; Mon. Sept 13, 10 a.m.-5 p.m. “Not fossils, jewelry, or supplies… just natural crystal and mineral specimens and gems. Moving location this year to the ballrooms of the Marriott Denver Airport at Gateway Park, 16455 E 40th Circle, Aurora. Just a minute from the Crowne Plaza lot; turn right on 40th St. then right at the first traffic light. This event is open to the public with wholesale pricing to all. Some dealers will also have some of their regular retail items. Sales Tax must be collected from non-resale customers.”

Sept. 10-18, Colorado Mineral and Fossil Fall Show, at the Crowne Plaza Denver Airport Convention Center, 15540 E. 40th Ave., Denver. No admission charge; see

Sept. 10-18, JG&M Expo Denver Show, at the Clarion Hotel, 200 W 48th St., Denver; open to the public, free admission. Jewelry, Gems, Minerals, Crystal, Fossils, Beads.

Sept. 10-19, National Western Complex Denver Mineral, Fossil, Gem & Jewelry Show. 10 a.m. – 6 p.m. daily; no admission charge; on the north side of I-70 at Exit 275-B, Brighton Blvd.

Sept. 16-19, Denver Gem & Mineral Show; 10 a.m. – 5 p.m. daily Thurs.-Sun. at the Colorado Convention Center, held as part of the “Hardrock Summit - Evolution” mineral and gemstone show. See . This is the show hosted by the Denver Council of Gem and Mineral Societies, and formerly held at the Denver Merchandise Mart; it is “The original” Denver Gem and Mineral Show, with special exhibits by clubs and museums. By my count this is the 53rd (not quite annual—there was no show in 2020) Denver Show. The featured mineral this year will be Fluorite.

Sept. 16-21, “Hardrock Summit 2021” gem and mineral show, Denver. This will consist of two separate shows; “Evolution”, Sept. 16-19, a gem and mineral show open to the public at the Colorado Convention Center (admission and parking fees [consider using public transportation!]), and “Sparkle and Joy”, Sept. 18-21, a gem trade show held at the Sheraton Denver Downtown Hotel, Plaza Ballroom. For more information see .

Oct. 1-3, Pikes Peak Gem, Mineral, & Jewelry Show, at the Norris Penrose Event Center, 1045 Lower Gold Camp Road, Colorado Springs. Sponsored by the Colorado Springs Mineralogical Society; see . [This is the gem & mineral show, normally held around June 1.]

Dec. 10-12, Flatirons Gem & Mineral Show, Boulder County Fairgrounds, Longmont CO. Sponsored by the Flatirons Mineral Club, Boulder, CO; see .

Feb. 25-27, Denver Gem and Mineral Guild Show, to be held (new location!) at Wheat Ridge United Methodist Church, gymnasium, 7530 W 38th Ave., Wheat Ridge (just east of Wadsworth Blvd.)

Mar. 25-27, Fort Collins Rockhounds Show, Larimer County Fairgrounds, Longmont, CO

Note: During the current Covid Virus season CMS meetings will be online until further notice. Always check the website for the lastest information.

Please see the latest monthly newsletter for additional upcoming events or more details of these events!
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Disclaimer: CMS assumes no liability for the contents of non-CMS event announcements. These are posted as a service to the community.


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