Fast. Simple. Secure.
St. Louis's Top Rated
Diamond Buyer
Our expert diamond buyers will pay the most for your diamonds.
Mia Cossey
St. Louis, MO Market Director
Featured in
Diamond Buyers of St. Louis, MO
Diamond Banc is the nation’s leading diamond buyer with diamond buying offices throughout the country. It’s convenient and secure for people in St. Louis to sell their diamonds to one of the nation’s highest-paying diamond buyers who are located in Missouri. For those seeking to sell their diamonds in St Louis, we are truly your best option. Our diamond buying and funding process is simple, fast, and secure.
Diamond Banc considers numerous factors when calculating our diamond purchase offers, such as carat weight, diamond shape, color, and clarity grades. All of these factors play a role in determining your diamond’s current liquid market value. Our data-driven evaluation process empowers you to get the most money for your diamond. We deploy market research to determine and outline your diamonds’ worth on the secondary market.
Diamond Banc supplies a nationwide network of jewelry retailers, diamond dealers, and private collectors with the inventory. This major advantage allows us to pay higher prices for diamonds of all types as we have established buyers that prefer different qualities, shapes, and sizes. These proprietary selling channels allow us to provide you with a maximum return when you sell a diamond. Our mission is to explain to you the value of your diamond and offer you the highest payout.
How It Works
- Get Your Quote.
- Ship or Make The Short Drive To Columbia, MO.
- Get Paid.
Diamond Banc’s national headquarters is located close by in Columbia, MO. After you have received our purchase offer, you can complete the transaction by overnight shipping your item to us fully insured via FedEx at no cost to you, or you’re welcome to make the short drive to Columbia to complete the transaction in person. We’re happy to come to you in St. Louis to complete a major diamond and jewelry buying transaction.
We’re eager to buy diamond rings made by the world’s top jewelers such as Graff, Harry Winston, Tiffany & Co., and Cartier from the St. Louis market. Diamond Banc will treat you with kindness, respect, and transparency and will be happy to provide you with a zero cost, zero pressure evaluation. With over 1,000+ company-wide Google reviews, Diamond Banc is your best option when looking for a St. Louis diamond buyer.
We Are Actively Seeking The Following:
- Diamonds of different shapes and sizes (generally .50ct & larger).
- GIA certified and non-certified.
- Currently paying premiums for diamonds 2cts and larger.
- We pay high premiums for diamonds 5-10ct+.
- Designer diamonds & engagement rings from coveted brands.
Connect With Us Today
Fill out the quick form above and we will provide you an approximate buy price and then determine the best plan to complete the transaction.
Feel free to connect with one of our Senior Diamond Buyers, Kyle or Jordan, both of who actively serve the St. Louis market from our headquarters in Columbia, MO.
Visit One Of Our Diamond Banc Locations:
- Tampa, Florida
- Boca Raton, Florida
- Miami, Florida
- Orlando, Florida
- Nashville, Tennessee
- Kansas City, Missouri
- Columbia, Missouri
Diamond Banc Affiliate Locations:
- Perry’s Jewelers | Charlotte, North Carolina
- Capetown Diamond Corporation | Roswell, Georgia
- Mann’s Jewelers | Rochester, New York
Mia Cossey
With over 13 years of distinguished experience in the jewelry industry, Mia Cossey leads Diamond Banc of St. Louis with a commitment to delivering premier service and unparalleled expertise. As a Certified Diamontologist and GSI Diamond Essentials professional, Mia combines technical knowledge with a deep understanding of the luxury jewelry market. Her previous role as Store Manager at Signet Jewelers in St. Louis underscores her dedication to exceptional client care and operational excellence, managing everything from quality control to client repairs and high-value transactions. At Diamond Banc, Mia’s client-centered approach ensures each interaction is transparent, informed, and tailored to meet clients’ unique financial needs.
Get a Quote
In Person or Online
Schedule a private evaluation at your local Diamond Banc or use our online submission form.
Start a Quote
In-Person Evaluation
Complete In Person
Meet privately with a Diamond Banc director who’ll evaluate your items right in front of you & make you an offer.
Get Funded
Fast & Secure
If you accept our offer, we will issue payment immediately via check or wire transfer.