About Diamond And Jewelry Exchange

Diamond And Jewelry Exchange is a premier coin dealer in Costa Mesa, CA, specializing in buying and selling coins and numismatic collectibles for both seasoned collectors and newcomers. With expertise in precious metals and rare coins, they offer professional appraisals and competitive pricing on a wide selection of numismatic items. Whether you're looking to sell your collection or expand your holdings, this Costa Mesa coin dealer provides trusted service and fair market value.

Active ListingLast verified: February 27, 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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4.9

★★★★☆

7 reviews · 4.9 (154 on Google)

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Luke SacuyGoogle★★★★★Oct 2025

Best place to buy and sell

— Luke Sacuy, Oct 2025

Sean WierzbickiGoogle★★★★★Feb 2026

Excellent service, great resource for Rolex watches!

— Sean Wierzbicki, Feb 2026

nancy hernandezGoogle★★★★★Oct 2025

Mr. Pedro is so amazing, I’ve sold some gold to him twice, with a great price. He always a friendly and kind attitude. Thank you for all your help Me. Pedro!

— nancy hernandez, Oct 2025

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AmberGoogle★★★★★May 2025

Went in today for the first time. Great variety of all types of jewelry. Good customer service will be back for more pieces soon. Got emerald earrings.

— Amber, May 2025

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Kaori TsukiGoogle★★★★★May 2023

The owner Pierre is very nice and friendly! I got a pair of beautiful amethyst stud earrings with very decent price. He took time and showed me a lot if jewelries. If I need a Diamond ring I’d definitely come back here.

— Kaori Tsuki, May 2023

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anthony fletcherGoogle★★★★★Sep 2025

Pierre was great. Guys been here for 40 years which says a lot. Quality jewelry, very high end pieces and reasonable prices! Would highly recommend.

— anthony fletcher, Sep 2025

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Marc ShapiroGoogle★★★★★Sep 2025

I had a ring that I no longer needed and decided to sell. I visited 4 different stores that purchase jewelry, and Pierre at the Diamond and Jewelry Exchange gave me 15% more than anyone else offered. He was also a pleasure to deal with, and just a nice honest guy. It is always a good idea to get a few quotes when buying or selling jewelry, and I strongly suggest that you speak to Pierre before selling or buying any jewelry.

— Marc Shapiro, Sep 2025

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