We buy and sell gold, silver, coins and diamonds of all types.
Years of knowledge. Super friendly service. Great prices.  
Business Hours:

M-F 10-5:30. SATURDAY 10-2. SUNDAY CLOSED.

701-566-5012

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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.

closeup of silver eagle and golden american eagle one ounce coins on black background

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!

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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. See our reviews at the bottom of the page!

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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.

  • review rating 5  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!

    thumb Cody Ciesielski
    9/18/2019

    review rating 5  Highly recommend! Very knowledgeable, great 1 on 1 service.

    thumb Lacey Nenow
    5/30/2019

    review rating 5  Very knowledgeable. Very friendly. Good experience!

    thumb Todd Clark
    5/23/2019
  • review rating 5  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!

    thumb Deb Schultz
    5/23/2019

    review rating 5  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.

    thumb G Moeller
    8/19/2019

    review rating 5  Jack is a great guy to talk to and has some really cool stuff to check out. Would recommend stopping by.

    thumb Nicholas Nupdal
    5/23/2019
  • review rating 5  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.

    thumb gena syvertson
    5/24/2019

    review rating 5  Jack is a great guy to talk to and has some really cool stuff to check out. Would recommend stopping by.

    thumb Nicholas Nupdal
    5/23/2019

    review rating 5  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.

    thumb Eli
    10/06/2019