Fast. Simple. Secure.

Jewelry Buyer in St. Louis

Experience a smarter way to sell your jewelry. Our expert buyers personally evaluate every piece submitted to ensure you receive exceptional value and service.

Jonathan Willis
St. Louis, MO Market Director
(314) 876-6659
stlouis@diamondbanc.com

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“We understand your jewelry is more than just an asset. Our team is here to provide you with secure, personalized financial solutions.”

Mills Menser
Owner and Founder

Featured in

St. Louis’s Premier Jewelry Buyer

Sell Your Fine Jewelry
Designer pieces by Tiffany & Co., Cartier, David Yurman, Graff, Harry Winston, etc., or high-value fine jewelry of any type.
Sell Your Engagement Ring
Diamond engagement rings, wedding bands, complete wedding sets, etc.
Sell Your Loose Diamonds
Individual diamonds of 0.50ct or larger. Certified or un-certified. Receive a free evaluation for your diamonds.
Sell Your Luxury Watches
Rolex, Cartier, Breitling, Omega, Tag Heuer, etc.
Sell Your Gold and Silver
Coins or bullion.
Sell Your Jewelry on Consignment
Diamonds, diamond jewelry, signed designer pieces, and luxury watches.

What St. Louis Clients Have to Say…

Rico

1 week ago

I have to be honest the first thing I learned was to pass up every pawn shop near or far second was knowledge then came business it was the best and if so I'll be back Jonathan

Luciano Woppo

2 weeks ago

This was my 1st time ever doing business with him and I will say the best experience I've had and great customer service overly knows what he is doing I will be returning with my business and definitely will be recommending others

Jenn Darnell

2 weeks ago

Incredible place to work with. Jonathan is very informative and trustworthy. Process was very easy. Will definitely be back to for future sales!

Keyblade Volo

2 weeks ago

Great customer service and Jonathan made me feel welcomed. 10/10 and would definitely come back

Derek Ewald

2 weeks ago

Akashdeep Khanikor

3 weeks ago

Quick, honest and friendly experience!

Patrice Wayne

3 weeks ago

I definitely would recommend Diamond Banc/Jonathan. He was very personable and informative.

Jon Bruns

4 weeks ago

Appreciated the transparency and explanation of how the buying price was determined. Also was provided good advice for an upcoming purchase.

Will C.

4 weeks ago

alawnna mcdaniel

4 weeks ago

Prompt. Professional and Knowledgeable. He explained the difference between carat types and how the price was calculated. Overall, great experience

Tori Taylor

1 month ago

Jennifer Hofacker

1 month ago

Jonathan was very professional, informative and kind. Would highly recommend this company to anyone

LaShonda Session

1 month ago

Very knowledgeable and efficient.

Garrett Knox

1 month ago

Johnathan was great to deal with. On time and delivered on his word. Thank You, Garrett

Wade MayhamJr

1 month ago

Outstanding personalable excellent professional.

James Haynes

1 month ago

Jonathan was fast and fair. He knows a lot about watches, which I found out through our negotiation and general candid conversation. Would recommend!

Marianne McGee

2 months ago

I’ve had two experiences with Jonathan’s from Diamond Banc in selling two pieces of jewelry after I shopped them around a couple jewelers. Jonathan’s far exceeded my expectations. He thoroughly explained how his company worked and how the market was driving the price. I would use him again in the future!

Tracy Strickland

2 months ago

I highly recommend working with Jonathan at Diamond Banc. He made the process easy, understands the emotions of selling your piece. He explained every step, pricing, etc. I felt comfortable with the process.

Dominic Gendron

2 months ago

Very friendly and fast service. No pressure or gimmicks. Knowledgeable and helpful staff.

Gary Weil

2 months ago

I sold a Rolex watch that I inherited at Diamond Banc. Johnathan Willis really knows his stuff and I received a fair price. Easy to park in this building and they validate your parking slip.

Maddie Laviolette

2 months ago

Johnathan was wonderful to work with.

Stefanie Hegger

2 months ago

Beautiful and very professional office! Great experience!

Hunter Durham

3 months ago

JERMAINE BRYANT

3 months ago

Great Service, very friendly staff.

Joanna Scroggins

3 months ago

Jonathan was knowledgeable about the business and the market prices. He was able to offer me an offer for the items that was acceptable.

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Other Items We Buy

In addition to the items featured on this page, Diamond Banc in St. Louis provides expert evaluations, immediate funding solutions, and industry-leading payouts across a wide range of luxury assets. Whether you’re looking to sell outright or secure a loan, our team specializes in fine jewelry, designer pieces, and high-end timepieces. Work with a trusted St. Louis jewelry buyer or explore brand-specific services for Van Cleef & Arpels, Cartier jewelry, Omega watches, and Patek Philippe watches. Diamond Banc is known for providing strong purchase offers on luxury items with a transparent, client-focused process.

We also specialize in evaluating and purchasing high-value assets such as diamonds, gold, and luxury watches. Connect with a leading St. Louis diamond buyer, get a quote from an experienced St. Louis gold buyer, or work with a dedicated St. Louis Rolex buyer. If you’re interested in borrowing instead of selling, explore flexible St. Louis loan options or specialized solutions like a gold loan in St. Louis. Diamond Banc evaluates items based on real-time market demand to deliver competitive, data-driven offers.

For clients seeking immediate liquidity, Diamond Banc offers a seamless and discreet process along with elevated alternatives to traditional pawn shops. Options such as pawn your Rolex in St. Louis and pawn jewelry in St. Louis provide fast access to capital while maintaining ownership. Visit our St. Louis office to explore all available services and connect with a trusted local expert. Diamond Banc is recognized for offering secure, professional evaluations and both selling and lending solutions tailored to each client’s needs.

Visit One Of Our Diamond Banc Locations:

Diamond Banc Affiliate Locations:

Perry’s Jewelers | Roswell, Georgia
Capetown Diamond Corporation | Charlotte, North Carolina
Mann’s Jewelers | Rochester, New York

Meet Our St. Louis, MO Market Director

Jonathan Willis

As Director of Diamond Banc of St. Louis, Jonathan Willis brings over 20 years of expertise in luxury jewelry, high-value transactions, and strategic client advisory. Known for his results-driven approach and deep market knowledge, Jonathan specializes in helping clients maximize the value of their fine jewelry and watches with confidence and clarity.

Clients who work with Jonathan benefit from his extensive experience in pricing strategy, market analysis, and negotiation—ensuring they receive the highest possible offers in the industry. His background in leading sales operations and growing multimillion-dollar businesses allows him to identify opportunities others may overlook, delivering tailored financial solutions aligned with each client’s unique goals.

Jonathan’s approach is highly personalized and relationship-focused. He takes the time to understand each client’s situation—whether they are looking to sell, leverage, or explore options—providing transparent guidance every step of the way. His commitment to discretion, efficiency, and professionalism ensures a seamless and stress-free experience from consultation to completion.

With a proven ability to build trust and consistently exceed expectations, Jonathan is a trusted partner for clients seeking to unlock the true value of their assets while receiving white-glove service and industry-leading results.

(314) 876-6659 stlouis@diamondbanc.com