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Clayton, MO

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The Diamond Shop

4.8 (34 reviews)
Open • 10:00 am - 5:00 pm
Updated 2 months ago

Services - The Diamond Shop

Jewelry cleaning

Jewelry redesign

The Diamond Shop Photos

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Recommended Reviews - The Diamond Shop

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Reviews With Photos

Photo by Ashley Fisher Photography
Margaret S.

If the Diamond Shop was a publicly traded company I would buy in. I love this place. We have bought my engagement stone, a custom made wedding band for myself, my husband's wedding band and a diamond necklace at this store. A few weeks ago I had my engagement ring decreased by two sizes and now it fits perfectly. We also had both of our wedding bands engraved, all of which was very reasonably priced. The engraving and resizing took less than a week. All of the employees are amazing, helpful and don't pressure you to buy.

I love my engagement ring. Thank you Todd for being in the right place at the right time.
Dana W.

Thank you Todd for being in the right place at the right time. The entire experience was fantastic, and my custom made engagement ring turned out beautiful. Couldn't have asked for anything more. We will definitely return for our wedding bands.

Gold monogram necklace from The Diamond Shop. Very satisfied!
Kelly P.

I ordered a monogram necklace while I was in the area visiting, after my sister recommended them (she got a BEAUTIFUL custom made engagement ring and wedding band from them). They called me Wednesday afternoon when it came in to check to make sure I still wanted it shipped home; They sent it out the next day, that following Thursday, and it arrived to me on that Friday at my home in Virginia! It was well packed and had no flaws or damages. Will definitely purchase from them again! Necklace is beautiful and extremely well made. The staff was friendly, professional, and courteous. Couldn't have asked for a better necklace or experience.

Our wedding bands, both from the Diamond Shop

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2 years ago

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2 years ago

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3 years ago

Very nice family owned business would highly recommend them for all your jewelry needs

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3 years ago

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7 years ago

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Emily G.

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4 years ago

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Mona K.

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10 years ago

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16 years ago

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16 years ago

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10 years ago

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17 years ago

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13 years ago

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18 years ago

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14 years ago

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13 years ago

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7 years ago

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Emily G.

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7 years ago

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Mona K.

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7 years ago

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Mona K.

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11 years ago

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6 years ago

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Emily G.

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13 years ago

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11 years ago

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12 years ago

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12 years ago

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13 years ago

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10 years ago

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7 years ago

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Mona K.

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8 years ago

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Mona K.

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13 years ago

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9 years ago

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Emily G.

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15 years ago

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13 years ago

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11 years ago

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11 years ago

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Ask the Community - The Diamond Shop

Are you able to get engagement rings with a moissanite stone here?

Jamie, Thank you for contacting The Diamond Shop. While we do not currently carry moissanite, we can certainly get it for you. Please contact us at 314.721.2210 for more… 

Don’t See Your Question? Ask Away!

Review Highlights - The Diamond Shop

“The owners of The Diamond Shop, Thom and Mona, are the only people that we would buy our jewelry from in St.”

Mentioned in 9 reviews

Read more highlights

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Clayton Jewelers - Owners of Clayton Jewelers, Steven and Shannon.

Clayton Jewelers

(61 reviews)

$$$$

My biggest regret is not ring shopping with my fiancé to introduce him to a place like this. He…read moreended up buying from a big box store and the experience has been less than thrilling, so when we inherited family wedding bands, I told him we're going somewhere local to get them resized. Even he was super impressed (and won't admit it but I think regrets not buying local!). I love the small, family feel. This place is VERY fancy, but it doesn't matter what you walk up in, they treat you with respect. They were so helpful and even cleaned my engagement ring for free, and honestly, cleaner than the big box store ever has. My fiancé even said he will absolutely return to Clayton for everything else moving forward. I have a warranty on my engagement ring with the store he bought it from, but after a few years, I'll probably move my business over here and just pay out of pocket. It's worth it for the quality and swiftness that they offer! Highly recommend.

I've had my engagement ring for almost two years now. When Clayton Jewelers says they consider you…read morea customer for life, they mean it. Of course they are upfront about their unlimited free ring cleanings and discounts on wedding bands for those who also bought their engagement rings with them, but they also will go above and beyond to make sure you continue to love your ring year over year. When I had some concerns about the original setting becoming loose, they took my concerns seriously. After they took a look and agreed with my inclination, they decided to simply make a completely new head for the setting. I fully expected to pay for this, but they completed the service on-the-house because that is the kind of pride they take in their work. I cannot say enough amazing things about this team or this shop. Please consider them for your jewelry needs.

Simons Jewelers - Store Interior

Simons Jewelers

(23 reviews)

$$$$

When I first started looking at engagement rings, my fiancé wanted to be sure it was EXACTLY what I…read morewanted. And finding that locally without going to a big box store isn't easy. Well, Simons isn't exactly "local" to us, we live 1.5 hours away but because I visit St.L often and have family there we thought we'd try a few stores. I have to say I was a little intimidated when we got to the area.... it's Clayton, expensive and high end stores. But I wanted to give it a shot. And I am SOOO glad we did!! Albert was amazing!! He worked hard to find the exact diamond I was looking for. He took the time to later talk on the phone and walk me through the website to find the PERFECT diamond. He knew the quality I wanted and helped me find everything that was on my list. And each time we went to the store we were treated with ZERO pressure. Their #1 priority was to make sure we were happy with the ring.... and we ARE! My fiance also got his wedding ring there. I don't normally write reviews... not good ones, and not bad ones. But this store and their employee Albert are top notch! I recommend them 100% and will be going back for more purchases. Thank you Simons Jewelers and Albert. Kent and I thank you!! Sincerely, Shelley

Simon's Jewelers is a nice family-owned operation…read more The issue is they can tell you lies and lead you on for months. I started shopping at Simon's in 2023 and have spent several hundred thousand dollars there. We were always treated courteously and nicely, until we weren't. I have received many great Rolex Time pieces from them and bought a lot of other items. The issue started in May of 2025 when Jonathan Katz decided to approach my wife about working on getting me a special Rolex time piece, that would get from Rolex because they were doing a gigantic remodel of their store. They felt they should get several great watches because they were rebuilding their store. In July and August of 2025, they again approached my wife about what my absolute number one watch would be? She explained to them what it was. They went so far to communicate with me to reconfirm. In September of 2025, they were gracious enough to give me a wonderful Yellow Gold and Green Dial Daytona. At that point my wife asked Jonathan point blank, "If we take this watch, will it exclude us from getting the one he really wants in the future?" to that Jonathan replied, "No absolutely not." Fast forward to December when said remodel was complete. My wife tried to approach Jonathan to have a conversation with him about this, and he blew her off. Fast Forward to January and the same M.O., and finally Jonathan said "We got him the Yellow Gold Daytona, we can't move the goal post." After this conversation I decided to have a chat with Jonathan about this, he was obviously scared as he appeared to be visibly shaken because let's be honest, Jonathan is a nice guy and really not one for confrontation. He explained to me that his father had indeed promised said watch to a customer who bought a 10 Carat Diamond Ring, and that I should go to the other Authorized Dealers I work with to obtain such time pieces. Now here's the fun part - Rolex is super against purchase tying - one purchase to another and that's not what they want their Authorized Dealers to do but I played it cool, I get that they are a small business trying to make as much money as they can, but of course this turned out to not be true. I spoke to Simon about a week later and he said "Jonathan was confused about what transpired and that we should definitely not have my wife work on things and to keep it between us to avoid any confusion, and there was not customer with a 10-carat ring" Anyway, after this debacle - I have attempted to throw these people bones and spent about $50,000 there this year despite the poor service and lies. Unfortunately, since then for the most part Jonathan tries to avoid me at all costs, and I have been working with Al, who is a nice person, but not exactly the best jeweler I've ever worked with. Today after dealing with yet another low effort situation from them, I decided to move on. I told them that I tried to constantly throw them bones and would go someplace else, then they wished me luck, as I was able to get the gifts I so wanted for others with literally a simple text message and an ask. I would tell anyone to be cautious about anything these people tell you because if they would outright lie to me and disregard me as an individual, after ALL the business we have done together, they will certainly treat just about anyone else the same or worse.

The Diamond Shop - jewelry - Updated October 2026

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