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Martinez Coin & Jewelry Exchange

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ID: 7483 Store 2089 mi from you Martinez, CA 94553 +1 (925) 335-9500
4.3 (33 reviews)
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About Martinez Coin & Jewelry Exchange

A trusted coin dealer in Martinez, CA since 1979, Martinez Coin & Jewelry Exchange specializes in buying and selling U.S. coins, paper money, and precious metals at current market values with complete transparency and expert guidance. The shop serves Solano and Contra Costa Counties with expertise in numismatics, scrap gold and silver, and operates as the largest supplier of coin books and supplies in the Bay Area. Award-winning for customer service excellence, they pride themselves on honest dealings and breaking down valuations in an easily understandable way.

Verified by US Coin Shows Last verified: February 27, 2026
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Reviews & Ratings

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4.3
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9 reviews Β· 4.3 (24 on Google)
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Christian Nogueda
Christian Nogueda Google β˜…β˜…β˜†β˜†β˜† 2mo ago

Closed two out of the three times I’ve been there, not worth wasting your time guessing. Go to pleasant hill. They rock, you rule.

James Lucadou
James Lucadou Google β˜…β˜…β˜…β˜…β˜… 2mo ago

5 star review

Joseph Samuel
Joseph Samuel Google β˜…β˜…β˜…β˜…β˜… 2mo ago

5 star review

Steven nimerov
Steven nimerov Google β˜…β˜…β˜…β˜…β˜… 2mo ago

5 star review

Debbie Crawford-Powers
Debbie Crawford-Powers Google β˜…β˜…β˜…β˜…β˜… 2mo ago

Wonderful place Jennifer is very knowledgeable, honest, treats everyone with the up most respect. Going to her shop insure that you will not get ripped off and will be taken care of. Great place you won't be sorry if you go here. Thanks for being you Jennifer :)

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Betsy Webb
Betsy Webb Google β˜…β˜…β˜…β˜…β˜… 2mo ago

We visited Martinez Coin & Jewelry to cash in some old coins left by my father many years ago. We were treated wonderfully well by the young woman running the place. She was courteous, knowledgeable and very easy to talk with. I had done a little research myself and felt the transaction was more than fair. We came away very happy with the experience.

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M Corrigan
M Corrigan Google β˜…β˜…β˜†β˜†β˜† 2mo ago

The people are very nice and we’re kind enough to stay open a few minutes late. This is not at all about attitude, they were great. I took in some slick barber coins and a small electrum piece that I had because my refrigerator compressor had just broken and it was an emergency. I find it’s much easier to act like I don’t know anything in my first interaction with these places because then I can tell if they are honest. Spoiler: no, they are not honest in my book but that’s just my opinion. The gold / silver electrum piece was very small, I heard her say 3 point 7/8 something like that grams and the purity was around 13k which she checked. Minimum they should have paid me was $90 and an honest price would have been more. It was just under 2 grams of gold with that purity and the rest still silver. Purely based on the spot price they ripped me off. PM’s are def a hard business, buying from people just under spot and selling just over it is hard, so people tend to try and get over on people who are clueless about the way it works, it very well should be illegal, think it may be but some shops are like this. Again, I’m not complaining because I needed the cash and like to make sure I know who I’m dealing with before doing any business. I sold the gold because I needed to fix my fridge but when he offered me half spot on the rest I declined. It really is ripping people off and not cool. Again, they were very nice people, no issues with that. Everyone has to survive somehow, but that includes customers. I won’t be back. If you are in a pinch, go ahead they will lowball you, if not they won’t give you what it’s worth look online for a fair price before walking in and even then idk if they would bother.

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John Dean
John Dean Google β˜…β˜…β˜…β˜…β˜… 2mo ago

Great service and top prices.

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Audrey F
Audrey F Google β˜…β˜…β˜…β˜…β˜… 2mo ago

Love the owner, they're honest experienced and friendly. And keep it real and have decent payments for metals. Thanks I'll be back

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