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Ken's Minerals & Trading Post

ID: 3424Store1088 mi from youCuster, SD 57730+1 (605) 673-4935

Serving Custer, South Dakota since 1936, Ken's Minerals & Trading Post is your premier destination for minerals, gems, fossils, and gemstones including Fairburns, crystals, jewelry, geodes, and rare specimens. Our knowledgeable staff is passionate about helping you find the perfect mineral, gemstone, or fossil item, whether you're seeking tumbled rocks, decorative pieces, or educational fossil collection kits. Visit us to explore our wide variety of natural treasures and experience the expertise that…

4.6(259 reviews)
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About Ken's Minerals & Trading Post

Serving Custer, South Dakota since 1936, Ken's Minerals & Trading Post is your premier destination for minerals, gems, fossils, and gemstones including Fairburns, crystals, jewelry, geodes, and rare specimens. Our knowledgeable staff is passionate about helping you find the perfect mineral, gemstone, or fossil item, whether you're seeking tumbled rocks, decorative pieces, or educational fossil collection kits. Visit us to explore our wide variety of natural treasures and experience the expertise that has made us a trusted resource for collectors and families for nearly 90 years.

Active ListingLast verified: February 26, 2026

Imported listing assembled from public business information and numismatic directory sources. Some business details may have changed. Confirm directly with the dealer or claim this profile to update it.

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Reviews & Ratings

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4.6
★★★★½
9 reviews · 4.6 (250 on Google)
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Dora Lepage
Dora LepageGoogle★★★★★
First time and I’ll be back
— Dora Lepage, Sep 2025
Molly Thornton
Molly ThorntonGoogle★★★★★
5 star review
— Molly Thornton, Oct 2025
Jeremy Paz
Jeremy PazGoogle★★★★★
Dude. This place is cool. I'm not really a rock sorta guy.....but pretty stuff is pretty. And this place is full of cool and pretty stuff
— Jeremy Paz, Oct 2025
John Buck
John BuckGoogle★★★★☆
4 star review
— John Buck, Nov 2025
Jonathan Dolan
Jonathan DolanGoogle★★★★☆
A wonderful place for kids to experience rocks and gemstones. We spent about an hour here. The “gemstone paining” is a MUST DO for kids and a great value starting at $7.00 a bag. Did take off one star for not having restrooms available.
— Jonathan Dolan, Sep 2020
Motomama
MotomamaGoogle★★★★★
LOTS of rocks and fossils. All different sizes and qualities. Love this big, pink quartz. I'm sure you could buy it if you could carry it. (But you can't have the old guy leaning on it)
— Motomama, Aug 2025
Kristyn Hansen
Kristyn HansenGoogle★★★★★
We loved this place! Spent an hour and a half just looking at all of the amazing rocks and gems, then our kids went back again a few days later. This place is literally a museum with the owner's extensive collection on display, which has some amazing stuff. Great prices too and an amazing variety! My adult kids did the gem mining outside, which was fun and worth the price. You can buy a dollar rock, big Solo cup loaded with local rocks for $5, split a large geode for $15, buy huge rocks by the pound, or get amazing imports from around the world! The workers answered lots of questions for us and were very knowledgeable. You must visit!
— Kristyn Hansen, Jun 2019
Roy Block
Roy BlockGoogle★★★★★
This place is so worth stopping in for, there is so much to look at from fossils, arrowheads, rocks and all kinds of tourism buys. The prices I believe are pretty reasonable and the owner is super nice. The facility is clean, organized and lots of labeling. Parking is easy and lots of it. Nice job!
— Roy Block, Aug 2023
Lisa Schneider
Lisa SchneiderGoogle★★★★★
We spent a day in Custer after traveling from Oregon on our way to Iowa, and Ken’s Minerals ended up being one of the best highlights of our trip! My kids and I still talk about all the incredible specimens we discovered here — each one more unique than the last. The prices were amazing, and the gentleman who helped us was polite and informative. Don't give into some of the tourist trap stores... save your money for something unique and lasting. I highly recommend stopping here if you’re anywhere near Custer!
— Lisa Schneider, Oct 2025

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