We have an extensive collection

Whether you're looking for geodes, angelite or precious stones the Moss Rock Shop has got it!

To view our current offerings visit the Inventory section of this site. If you are looking for something specific, we more than likely have it so contact us with your request.

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Blog Index
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Jack in his workshop - looking for the next stone to polish.Welcome to the Moss Rock Shop.
Everything we sell is genuine, all-natural and unique!

The extensive collection of Jack Sliemers is now being liquidated. We offer a variety minerals, fossils, cabochons, faceted stones, lapidary rough (tons), carvings and quartz crystals... just to name a few. Take a look around, read a letter from Jack, view our inventory (we are adding new pieces every week), or send us an email and let us know what you are looking to find.


Jack’s Annual Home Sale 

June 12th, 13th, 14th 2015

9am to 5pm

28730 Moss Rock Road

Golden, CO 80401


The sell off continues!

 Come and find your special piece:

 fossils, minerals, cabs, faceted stones and tons of rough!

See you there!


25% off Spring Sale now through April 14th 2014

Shop our full inventory now and save!

Enter Discount code: SPRING at checkout


Moss Rock Shop at Tucson Gem and Mineral show

 (from left to right) Senior Rock Hound in charge and his trusty assistant


 Rose Quartz from South Dakota

Tiger eye

Banded Amethyst 

Chrysocolla from Arizona

 Silver from Colorado

 Petrified wood slabs from Arizona


Denver Museum of Nature and Science

identifying gems and minerals of the Konovalenko sculptures. L-R: Jack Sliemers; Morgan Sonsthagen (visiting experts); Photo by Steve Nash

The Denver Museum of Nature and Science recently invited me (and a couple of other guys too) to identify the gems in the sculptures of Vasily Konovalenko. The museum is home to the largest collection of gem carvings outside of Moscow by the Russian expatriate. It is the only public collection and display in the Americas.

Each of these intricately detailed carvings capture scenes from Russian folklife and are designed from a huge palette of colors using only gems! If you haven't had the opportunity to see them you should visit the museum and take a look at the 16 sculptures that are on display there.