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American Diamond Exchange, Inc.

ID: 4252 Jewelry Store 534 mi from you New Haven, CT 06515 +1 (203) 397-8068
3.7 (42 reviews)
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About American Diamond Exchange, Inc.

American Diamond Exchange, Inc. is a trusted coin dealer in New Haven, CT specializing in numismatics and precious metals for collectors and investors. With expertise in buying and selling coins, this shop offers professional appraisals and personalized service for numismatic enthusiasts of all levels. Whether you're looking to build your collection or sell valuable coins, American Diamond Exchange provides reliable guidance in the numismatics market.

Imported Listing Last 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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3.7
★★★½☆
8 reviews · 3.9 (34 on Google)
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Lone Traveller
Lone Traveller Google ★☆☆☆☆ 1mo ago

They should change there name nothing to do with American, and not a very impressive store at all!! Try somewhere else

S. C.
S. C. Google ★★★★★ 1mo ago

Cannot say enough about the quality of their jewelry and customer service. I have purchased two diamond rings, earrings and sapphire ting over the last 18 years and couldn’t be happier. What I like most is thst ADEX isn’t a franchise type store like Kay’s where you can find cookie cutter pieces. If you’re looking for quantity, perhaps ADEX isn’t for you. If you’re looking for quality, you’ve come to the right store. My jewelry is unique. David and staff helped me design my wedding band to fit with my diamond and the outcome was brilliant in style and sparkle.

J B (JB)
J B (JB) Google ★☆☆☆☆ 1mo ago

I am very unhappy with the service I received from the owner and the results of the work on our rings.

Margaret Mirabella
Margaret Mirabella Google ★★★★★ 1mo ago

I went to American Diamond Exchange to purchase my wedding band and my husbands wedding band and we could not have had a better experience! I also got a necklace modified that Dave designed so beautifully, I get complements on it daily! David and Kathy were so friendly, warm, welcoming and very knowledgeable. They were extremely patient and so fun to talk to. I cannot recommend them enough for all of your jewelry needs!! They’re the best!

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Rootuals
Rootuals Google ★☆☆☆☆ 1mo ago

Update: although the business considered my review to be “foolish”, they got back to me after I made a review. I didn’t bother to see what the response was because it didn’t matter at that point, but I’m sure my “foolish” review warranted their response 🤦‍♀️. Original: They have a difficult time responding to general inquiries. I can imagine what it’s like to attempt an actual transaction.

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Samantha Dahmer
Samantha Dahmer Google ★★★★★ 1mo ago

This was the best experience! From Kathleen’s greeting all the way to Alleys finished piece. My fiancé and I had a ring we wanted to remove smaller center stones of a beautiful princess halo and had no idea if that was even possible. Alley took the time to sit with Zack and I to go over all the possibilities by measuring and telling us exactly what size diamond to get, what the crowns and heights might be and what to consider (at no cost might I add). Once we found the perfect diamond, Alley verified our online purchase and took down all my detailed requests. She went so far as to draw out sketches, take magnified pictures and just really took the time to explain all of this so thoroughly which was so extremely helpful. If you aren’t impressed yet, get ready. I had a time frame of 2 weeks, not knowing if that would be a possibility either. We paid a very reasonable price to have it rushed. Alley ORDERED our crown on Wednesday and the ring was totally COMPLETE Friday morning, ready to be picked up. Less than two days for the entire process. It is more perfect than I even imagined. If we or anyone ever needs work done, Alley is the one to go to. We will be back! I couldn’t thank you enough Alley!

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Jamie White
Jamie White Google ★★★★★ 1mo ago

I wanted to share an experience I recently had at ADEX. I had stopped by with a picture of a ring that I wanted to recreate while on a budget. I sat with Allie who is the goldsmith and I showed her the picture of the ring. Within a few days she got back to me with a sketch and it was spot on. As you will see, this ring is very detailed.This is not a project that I would of trusted with any other jeweler besides David and his team.I can go on and on about how wonderful this ring came out however I am going to add pictures of the inspiration ring and my ring so that you can judge for yourself. In closing, I have to say that I am grateful to have had the opportunity to work with such intuitive, creative and kind people. This experience has been nothing but a pleasure!

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Pickles
Pickles Google ★☆☆☆☆ 1mo ago

Rude and egotistical salespeople. Terrible experience! Response to owner's response: Don't try to sound all nice now and blame it on me. I am the customer and you were rude to me. I don't care that u served customers for 40years, Maybe you are just getting tired and cranky!

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