Founded in 1964, the Denver Gem and Mineral Guild is an award winning non-profit organization that pursues exploration, experimentation, and education in the Earth Sciences; the discovery, development and preservation of minerals and mineral deposits; and the advancement, encouragement and utilization of the principles of art and craftsmanship as applied to gems and minerals.  We are a diverse group of women, men, and children who love ROCKS. We love to dig them, cut them for jewelry, and collect them. Our members love to share our passion for rocks and minerals. We have professional geologists, teachers, and people who just love rocks.

We meet the 2nd Friday of the month – September through May at the Colorado School of Mines in Berthoud Hall room 108 at 7pm – VISITORS WELCOME!  – CLICK HERE for details.

January 2021 Program

Here is the replay of our DGMG January 2021 meeting. 

If you’ve ever tried to look up information about minerals (such as in trying to write “correct” information about a mineral for a label), you’ve probably asked yourself, “What has happened to minerals?” Didn’t they used to seem so simple? Aren’t they so very much more complicated now?

I guess some of those questions most apply to those [of us] who first studied and learned about minerals “a long time ago”. If you’re fairly new to minerals… well, maybe it all seems complicated. Overly complicated? Do mineralogists just make things up to be extra confusing, just to plague the amateurs? Why are some minerals part of “families” or “groups” or (heaven help us) “supergroups”? Why do so many minerals have multiple names? And why are some commonly known minerals said “not to be proper minerals at all”?

Pete will try, in his reasonably light-hearted and entertaining way, to take us through the story of why and how we go from such “simple” minerals as quartz, pyrite, calcite, fluorite, to “more complicated” ones like turquoise, mica, feldspar, tourmaline; to the “extraordinarily complicated” minerals like… well, how about hydoxyplumbopyrochlore, or ferro-fluoro-edenite? And is that green gemmy mineral, olivine or forsterite or peridot? And is that pink, fluorescent mineral, manganocalcite or manganoan calcite or manganiferous calcite or _______?

February 2021 Event Schedule

Here is the lineup of coming events. Check out the latest DGMG Newsletter for additional details.

DGMG Meeting – 7 p.m. February 12, 2021 – Gems from Russia by Peter Lyckberg

Join Zoom Meeting
Meeting ID: 884 9470 5183     Passcode: 380465

Our Program Chair/Vice President – Dr. Pete Modreski says –

Our February program will be a video, of a webinar lecture that Peter Lyckberg gave at the National Natural History Museum of Luxembourg on Dec. 8, 2020, on the occasion of the opening of their special exhibit about gemstones, “From Dark to Light.” Peter Lyckberg is a well-known mineralogist and geologist who grew up in Sweden and has studied gem and crystal deposits around the world. The Luxembourg museum described him as “Expert in new minerals, mineralogy of ore deposits and granitic pegmatites, genesis of deposits, and history of mining.”
The 2018 Dallas Mineral Symposium introduced him as “well known for his studies of ore, pegmatite and gem deposits in Scandinavia, Ukraine, Russia, Afghanistan, Pakistan, Namibia, Brazil, USA. For the last 21 years Peter worked as a nuclear inspector at the European Commission in Luxembourg.”
Earlier, speaking at the 2013 Dallas Mineral Symposium, his introduction included “In 1992 Peter was the first non Soviet scientist since the Russian revolution in 1917 to visit, photograph and study the classic Emerald-alexandrite deposits at Tokovaya-Izumrud near As best and the gem pegmatite and amethyst veins around Alabashka-Mursinka in the Urals, Russia, and he worked with the Yakutsk Diamond mines in Siberia.”
I know Peter personally, and have heard him give excellent presentations in Tucson and elsewhere. I’ve watched this video, and it is excellent, and I’m sure you will all watch it with fascination. He described many of the famous gem districts of Russia, most of which he has visited in person, with many personal anecdotes about what it’s like to be there. The video will be 1 hour and 15 minutes long; I will introduce it and then let Peter  show his pictures and stories!

Join the fun

Join the Denver Gem & Mineral Guild!

The Denver Gem & Mineral Guild is a member of:

The Greater Denver Area Gem and Mineral Council, Inc., host of the Denver Gem & Mineral Show™, is a non-profit 501(c)(3) corporation organized exclusively for charitable, educational, and scientific purposes. Trustees from each of our eight member clubs sit on the Council Board. The Council oversees the annual show, and twice each year, the Council distributes proceeds from the show in the form of grants to not-for-profit organizations, particularly those based in Colorado, to promote activities that educate the public in the earth sciences.

Annual giving ranges from $20,000 to $30,000. Funds are directed toward site and specimen preservation and display efforts, as well as to assist institutions in purchasing equipment, tools, and supplies. Recent grant recipients have included the Denver Museum of Nature and ScienceColorado School of Mines Geology MuseumDinosaur RidgeMorrison Natural History Museum FoundationHinsdale County Historical SocietyCanyon City Geology ClubBig Horn Basin Foundation, and the Junior Museum of Pennsylvania.

The Rocky Mountain Federation of Mineralogical Societies has a close association with all the clubs in the Society to promote the study of earth sciences, including the lapidary arts, the study of fossils and paleontology, and related crafts.

The RMFMS was organized in 1941, and held its first annual convention at the Argonaut Hotel in Denver, Colorado. There were 16 organizations in attendance. The RMFMS became one of the original four founders of the American Federation of Mineralogical Societies when it was organized in 1947.

The Rocky Mountain Federation of Mineralogical Societies covers local clubs in the following states:

Arizona (17), Arkansas (1), Colorado (20), Kansas (5), Nebraska (western portion of state) (1), New Mexico (7), Nevada (1), North Dakota (western portion of state)(1), Oklahoma (9), South Dakota (western portion of state) (1), Texas (1), Utah (7) and Wyoming (7).

The American Federation of Mineralogical Societies promotes popular interest and education in the various Earth Sciences, and in particular the subjects of Geology, Mineralogy, Paleontology, Lapidary and other related subjects and sponsors and provides means of coordinating the work and efforts of all persons and groups interested therein. It sponsors and encourages the formation and international development of Societies and Regional Federations and by and through such means to strive toward greater international good will and fellowship.

The American Federation of Mineralogical Societies is composed of the following seven similar regional organizations of gem, mineral, and lapidary societies.  CFMS – California Federation of Mineralogical Societies | EFMLS – Eastern Federation of Mineralogical and Lapidary Societies | MWF – Midwest Federation of Mineralogical and Geological Societies |  NFMS – Northwest Federation of Mineralogical Societies |  RMFMS – Rocky Mountain Federation of Mineralogical Societies |  SCFMS – South Central Federation of Mineral Societies
 |  SFMS – Southeast Federation of Mineralogical Societies

This page last updated on  02/02/2021