We buy and sell gold, silver, coins and diamonds of all types.
Years of knowledge, friendly service, free appraisals, great prices.
Business Hours:
M – F | 10am – 5:30pm
Saturday 10am – 2pm
SUNDAY *CLOSED*
701-566-5012
Sell To Us
We buy gold jewelry, gold and silver coins and bars, old U.S. Coins, diamonds and sterling silver flatware. We offer fast and FREE appraisals so if you’re not sure what you have, bring it in for a bid!
If you decide to sell, we’ll pay you top dollar right on the spot. If not, that’s ok too. No pressure here, folks.
Buy From Us
We have a large selection of gold and silver bullion in stock and ready to go, along with old U.S. coins and who knows what other trinkets we might have laying around.
We can accommodate any size order big or small and we will dazzle you with our fantastic customer service and low prices. We promise!
Why MinDak?
Our philosophy is simple, treat customers the way we’d like to be treated.
Our customers love us and it’s proven with our 5 star Google review rating and our many repeat and referral customers!
Digital Currency ATM
We have a digital currency ATM on site. You can buy or sell 7 different currencies for cash. Bitcoin, Litecoin, Dash, Ethereum, Binance, Komodo and Tron are currently available.
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Jack is a great guy to talk to and has some really cool stuff to check out. Would recommend stopping by. 
Nicholas Nupdal
5/23/2019 They pay great prices & have great prices in the store. Excellent service. 
Karen Littlewind
12/09/2019 If you’re looking to avoid the next recession by purchasing precious metals MinDak Gold Exchange is the place to go. Jack was very knowledgeable and knew what he was talking about, whether that was current market trends, news, future forecasts, etc. 
G Moeller
8/19/2019 - Jack is a great guy to talk to and has some really cool stuff to check out. Would recommend stopping by.
Nicholas Nupdal
5/23/2019 Fairly priced, they did not gouge me and underpriced the value of what I had to offer. Jake was wonderful at assisting me and I WILL be returning to buy and sell on the future! 
Kay Ter
2/01/2020 Super friendly service & best of all always an honest opinion. Jack is always happy to see me if I am bringing in a small ticket item or a larger one for a price opinion. Appraisals are free. I have been pleasantly surprised how much some of my coins were worth and some old gold jewelry including my class ring & black hills gold. 
gena syvertson
5/24/2019 - Great place if you are looking to buy or sell wether you are looking to bulk up on bullion or add another fine coin to your collection would highly recommend and will return!
Cody Ciesielski
9/18/2019 Jack was very friendly. Would absolutely recommend MinDak. Thank you! 
Joseph Kearns
3/24/2020 Great service and selection of coins and silver ... 
Matt Beauchene
6/02/2020 - Nice place, nice service, knowledgeable staff. But they do have a very high markup, which is just happening in the silver industry now. I really do like the store, though.
Eli
3/18/2020 Jack was very nice & helped me get a numismatic coin sold. Will be back in soon again to buy. Hopefully he has some gold bullion left! 
John Lewis
4/05/2020 Great prices & best place to sell scrap gold & you get a great price 
Lucas Melaas
12/09/2019 - I would strongly suggest you stop in and see Jack in this new & convenient location! Whether you’re looking to invest in precious metals or you cleaned out grandma’s jewelry box....this is the place to go!
Deb Schultz
5/23/2019 Very knowledgeable. Very friendly. Good experience! 
Todd Clark
5/23/2019 Yet another 5 star review to add to your collection! The prices here are super good, the staff are friendly, and don't disturb the pet rock. Eli
10/06/2019 - Highly recommend! Very knowledgeable, great 1 on 1 service.
Lacey Nenow
5/30/2019