Northwest IL Rock Club Gem Show!

Northwest IL Rock Club

Northwest IL Rock Club Gem Show!

Northwest IL Rock Club
Northwest IL Rock Club

Are you ready for the 2019 JEWELRY, GEM, FOSSIL & MINERAL SHOW?
The weekend of November 9th and 10th will be the Annual Rock, Gem, Mineral, and Fossil Show! Many vendors! Lots to see! Many games for the kids young, and young at heart.

Speaker list for NWIRC Rock and Gem Show November 2019
10 am Rhiannon LeVine – Ph.D. Candidate Department of Geophysical Sciences University of Chicago
​Topic : “Cambrian Beasts and Where to Find Them”
1 pm Paul Sipiera – Planetary Studies Foundation
​Topic: Meteorites
11 am Teresa Marche –
​Topic: Fluorescent Rocks and the Sterling Hill, New Jersey, Mine

1 pm Dan Large – Fossil Preparator and Collections Assistant
Burpee Museum of Natural History
​Topic: Why Paleontology
Northwest Illinois Rock Club’s 2019
Demonstrations • Speakers Dealers • Displays Fun-filled Children’s “Fish Pond” Holiday Shopping and more!
Saturday, November 9th from 9:00 A.M. to 5:00 P.M. Sunday, November 10th from 10:00 A.M. to 4:00 P.M.
Student Conference Center / Parking Lot A 2998 West Pearl City Road, Freeport, Illinois 61032
Find Northwest IL Rock Club on Facebook for More Information
Free Will Donation

Vallejo Jewelry, Mineral, Gem Show 2020!

Gem Show Flyer 2020-page-001

Vallejo Jewelry, Mineral, Gem Show 2020! Save the date!
Gem Show Flyer 2020

Gem Show Flyer 2020-page-001
Gem Show Flyer 2020-page-001

Vallejo Gem & Mineral Society was founded October 8, 1954.

It was formed by rockhounds interested in sharing their interest and knowledge of rocks, minerals, geology, and other aspects of rockhounding and collecting, cutting, and polishing.
The 2019 Gem & Mineral Show is coming up February 23th and 24th! Please mark your calendars! We’ll be holding drawings, a silent auction, a kids corner, and lots more! Its a bunch of fun! Show this post at the front door for $1 off your entry fee!

Gem Show Flyer 2020-page-001
Gem Show Flyer 2020-page-001
About Vallejo Gem and Mineral Society:
Membership: we have approximately 250 members as of December 2018. We offer our members:

Instructors that teach lapidary, lost wax, wire wrapping, silversmithing, geology, and more!
Field trips for collecting rough rock. Field trips include day trips, weekend and camping!
An annual Gem & Mineral show as well as opening to the public during the county fair.
An annual picnic and Christmas party to socialize.
Our shop, which is equipped with cutting, grinding, and polishing equipment as well as a lost wax casting area.

If you would like more info on any California Gem Show and rockhound club click on the American Geode News page for up to date listings and links to Gem Show, Mineral Show, and Fossil Show announcements. American Geode updates our rockhound news twice an hour and showcase the top mineral shows and rockhound news in the USA and the World. Also, follow American Geode on Twitter for even more rockhound events, commentary, and laughable quips from American Geode.

Rock Shows
Rock Shows

New Jersey and New York Gem and Mineral Shows

Rock Show

New Jersey and New York Gem and Mineral Shows
Great rock shows in New Jersey and New York are as cool as great food, great comedy shows, and great nightlife.
Here is a list of upcoming mineral and rock shows in New Jersey and New York. New York and New Jersey are both VERY popular states for gem, mineral, and rock shows! Buy your stocking stuffers and Secret Santa gifts in advance!
Contact American Geode through email if you are in charge of mineral and rock shows, and we will post them. Contact American Geode if you would like to learn more best practices of attending, and having the best time at the mineral and rock shows. American Geode are the mineral and rock show experts and we attend or deal at many of the New York gem and mineral shows.

July 11 – September 28
“Summer Gems”an Exhibition of
Nihonga Paintings and Minerals
Sato Sakura Gallery at 501 West 20th Street, New York
A gallery collaboration between Wilensky and Sakura;
visit for info.
July 27-28 38th Annual Gem & Mineral Show
Mattituck High School,
15125 Main Road, Mattituck, NY
Sponsor: Long Island Mineral & Geology Society
(LIMAGS); Info:
August 9-11 East Coast Gem, Mineral & Fossil Show
Better Living Center, Eastern States
Exposition, West Springfield, MA
Largest Show in the East! 200+ Dealers!
August 17 Gem and Mineral Show and Sale
Morris Museum , Morristown, New Jersey
Sponsor: Morris Museum Mineralogical Society
September 21 – 22 Mid-Hudson Valley Gem and Mineral Show & Sale
Gold’s Gym, Poughkeepsie, NY 50th
Anniversary Show!; Theme: “Pyrite . . . Don’t be
Fooled”; Pyrite Exhibit by Vassar College
October 12-13 South Jersey Gem, Jewelry, Mineral & Fossil Show
1721 Springdale Road Cherry Hill, New Jersey
November 9-10 Fall NYC Gem, Mineral, Jewelry & Fossil Show
Grand Ballroom, Watson Hotel,
New York City
25+ High Quality Dealers; NYMC Booth; Lecture on Both Days; Wholesale Section

If you would like more info on New Jersey or New York Gem and Mineral Shows and rockhound clubs click on the American Geode News page for up to date listings and links to Gem Show, Mineral Show, and Fossil Show announcements. American Geode updates our rockhound news twice an hour and showcase the top mineral shows and rockhound news in the USA and the World. Also, follow American Geode on Twitter for even more rockhound events, commentary, and laughable quips from American Geode.

Rock Shows
Rock Shows

The Essential Guide to Gem, Mineral and Fossil Clubs

American Geode

From attending, volunteering for, and being members of gem and mineral clubs in New York, Texas, Pennsylvania, and attending camps, seminars and intra-club retreats with people from all over the United States, we consider ourselves gem, mineral, and fossil club aficionados. So whether you are considering joining a gem and mineral show for the first time that perhaps you found on an events page, or you are a veteran of gem and mineral clubs, this primer on clubs will prove to be a valuable resource on what to expect from a gem and mineral club and how to have more fun.

First, consider what you are seeking from a club. Is it the academics and education of gemology, geology, paleontology, or archaeology? Are you seeking rockhound partners and buddies? Are you seeking to use a work-shop for cabochon or lapidary arts? Are you seeking fellowship with a group that meets outside of their monthly meetings? These are questions to ask as you search for the club that is right for you.

The answer may be to join more than one club…

Each club does have a different style, and you can tell what that is from their homepage, or if they do not maintain a homepage, then ask someone from the club. Some clubs have access to facilities offering a complete workshop; saws to cut giant geodes in half, cabochon machines, polishing wheels, lapidary tools, faceting machines, and kilns to heat your wire-wrapping or jewelry projects are for member use! Some clubs maintain all that equipment in their own private clubhouse! Is a workshop something you seek to pursue and hone your hobby? If so, then find the club that offers that equipment.

Now the clubs like this may not always have a special monthly speaker, but the clubs who meet in a rental space, hotel banquet hall or college facility do very likely provide different speakers each month. The clubs in big cities, where a workshop or clubhouse would be impractical, or impossible to acquire and maintain rely on other facilities for monthly meetings and shows, so to keep membership growing, those kinds of clubs keep a lively roster of speakers on their calendars.

Is your goal to get out and rockhound? Do you seek to explore old abandoned mines? A question to ask a club is do they throw and organize field trips? You can often times find out the answer on their homepage. There is often a “field trip” section, much like this Rockhound page. If you can’t tell, then ask the club. Sometime being in a big city can make field trips a challenge. Most people in New York City or Chicago do not have cars for instance. A field trip would require permission and arrangement to visit a site, a bus or fleet of vans, and if it rains, the field trip is canceled. So big city clubs may not offer rockhounding field trips. The age range of the club can also set the tone for interest in rockhounding and field trips. For a club whose members’ days of getting out into the field are past, you may not find these opportunities.

So what is the best approach to becoming involved with gem, mineral, and fossil clubs? The answer is to join more than one. The dues are annual and range from $15 per year to about $50 per year on the very high side. You may live in New York but find the newsletter from a club in Texas is chock full of so many good tips about polishing gems and minerals, cleaning rocks from the field, and other anecdotes that you belong despite the geographical distance.

So join more than one club, to have access to a workshop when you need it, field trips in the spring and fall, the chance to hear academic and scholarly discussions in geology and paleontology, and make new friends during the whole gem and mineral club experience!

Herkimer Diamond History and Heritage

American Geode

Now the source and formation of Herkimer Diamonds is of particular interest to us here at American Geode because the Herkimer Diamond was formed in “pockets” not unlike the pockets that formed geodes. Most quartz crystals grow, over the course of millions of years attached to a matrix, attached to the surrounding rock or stone. So in those formations only one end of the quartz crystal grows to its point. With Herkimer Diamonds forming inside pockets, freed from the surrounding matrix stone, they grow points on both ends.

The Herkimer Diamond began forming nearly 500 million years ago in pockets within a sedimentary rock called Dolostone (Dolomite and Limestone). Sedimentary rock, different from its two cousins Igneous rock and Metamorphic rock, is formed by layers of mineral and organic matter under hundreds of million years of pressure. As more layers of mineral and organic matter are deposited, this increases the pressure and weight on the lower and earlier layers of sedimentary rock below. The Dolostone covered Herkimer County during the Cambrian Age, when Herkimer County was also the bottom of the sea that spanned across North America.

Now this is the part of the Herkimer Diamond formation that is similar to the way geodes are formed: organic material, plants and sea life would die and be buried under new layers of sedimentary stone. When these plants and other sea life would decompose under the rock, they release gases, and this gas is what formed the “pocket.” Evidence of this organic, plant material succumbing to decomposition is clear when you see the black shiny flakes of Anthraxolite that surround or leak from these pockets. Anthraxolite is a carbon compound and by-product formed when organic material breaks down.

So as the organic material decayed and broke down it became a gas, trapped below layers of sedimentary stone. Air creates its own pressure inside a substance, so the air pressure was carving out its own cavity from the inside out. These air pockets became the pockets we rockhounds discover as we crumble, break, and peel away layers of the dolostone. Over the course of 200-250 million years the layers of sedimentary rock increased and grew, and this increased the pressure and heat on the buried dolostone. Also inside each of these air pockets were various quartz and carbon elements and other compounds “feeling the heat” from being buried below layers of sedimentary rock.

Under this pressure of the sedimentary layers of rock, and the ensuing heat, the quartz and other compounds inside these pockets began to transform themselves. Finally, over the course of 300 million years, the glaciers that sat atop Herkimer County began to melt, and washed away layers of the sedimentary rock, and allowed the compounds and elements inside these pockets to cool down and then crystallize.

An important question to answer right now is “why are the Herkimer Diamonds double-terminated?” The answer is that quartz does not adhere to the dolostone, therefore the quartz trapped inside these air pockets did not attach to the surrounding matrix host stone. The process left the quartz crystals free to fully crystallize unattached and allowed both of the ends to grow into fully terminated points. Many Herkimer Diamonds are found as clusters attached to one another. They adhered to one another during their crystal growth formation, but again did not adhere to the dolostone interior of the air pocket. The value of Herkimer Diamonds is determined by size and their opacity or translucence. The larger and more translucent Herkimer Diamonds are worth more to a collector or jeweler than the smaller opaque specimens. Knowing the history and background of the Herkimer Diamond however lends a premium in our opinion when you are considering adding Herkimer Diamonds to your collection. They are not commercially mined due to various New York state laws limiting mining in the state, and most of Herkimer County is being used today by happy grazing cows, sugary apple orchards, tart cherry trees, farms of squash, cabbages and onions, and wine grapes. We have recently gained access to heretofore unmined and barren acres in the Herkimer County area on the same geologic slope and ledge as the traditional Herkimer Diamond mines. We are in consultation right now with the owner about constructing a pole-barn over this new Herkimer mine so we can mine year-round.