More upcoming Gem, Mineral & Geology events in the Denver Area

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.

Flyer for Table Mountain TalkSat., 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.  

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.

September 2021 Show PosterSept. 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

For more lecture series during the year see:

Colorado Beer Talks (2nd Tuesday, 6-8 p.m.), Windy Saddle Café, 1110 Washington Avenue, Golden, “Golden’s grassroots version of TED talks, Expand your mind with a beer in your hand”,

Colorado Café Scientifique in Denver, monthly lectures on science topics held either at Blake Street Station or Brooklyn’s, Denver; open to the public, no charge other than refreshments you may choose to purchase; see .

Colorado Scientific Society (3rd Thursday, 7 p.m.), see . Meets at Shepherd of the Hills Church, 11500 W. 20th Ave., Lakewood CO, except when noted.

CU Geological Science Colloquium (Wednesdays, 4 p.m.) see

CSU Dept. of Geoscience Seminars (Fridays, 4 p.m.), see

Van Tuyl Lecture Series, Colorado School of Mines, (Thursdays, 4 p.m.):

Denver Mining Club (Mondays, 11:30), see .

Denver Museum of Nature and Science, Earth Science Colloquium series, 3:00-4:00 p.m., VIP Room unless noted, day of the week varies. Museum admission is not required; see

Denver Region Exploration Geologists Society (DREGS; 1st Monday, 7 p.m.),

Florissant Scientific Society (FSS); meets monthly in various Front Range locations for a lecture or field trip; meeting locations vary, normally on Sundays at noon; all interested persons are welcome to attend the meetings and trips; see  for details and schedules.

Nerd Night Denver is a theater-style evening featuring usually 3 short (20-minute) TED-style talks on science or related topics; held more-or-less monthly at the Oriental Theater, 4335 W. 44th Ave., Denver; drinks are available; for ages 18+.  Admission is $6 online in advance, $10 at the door. See .

Rocky Mountain Map Society (RMMS; Denver Public Library, Gates Room, 3rd Tuesday, 5:30 p.m.),

Western Interior Paleontological Society (WIPS); beginning January 2019, WIPS will meet on the 1st Monday of the month, 7 p.m., at Lowry Conference Center, 1061 Akron Way, Denver. See .

Thanks to DGMG V.P. Peter J. Modreski for keeping us up to date with local events!
To be added to his email list for upcoming events, send request to:

This page last updated  8/13/2021