Gold & Silver 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.
Tell us about your item, include a few photos, and one of our experts will reach out shortly.
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Mills MenserOwner and Founder
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.
How it Works
- Request a quote
- Visit an office or request a label
- Receive your offer and funding within 24 hours
From The Founder

Your “Gold and Silver Buyer Near Me”
Do you have gold or silver jewelry, coins, or bullion sitting unused? Diamond Banc in St. Louis provides a straightforward way to transform your items into instant financial opportunities. As a leading St. Louis gold and silver buyer near you, we pay strong, market-driven rates for everything from bullion to broken jewelry.
Items We Purchase in St. Louis
Thanks to our direct connections with national refiners, Diamond Banc can purchase everything from single items to large collections—while offering you competitive payouts.
- Gold & Silver Bullion
- Gold & Silver Coins
- Fine Gold Jewelry of All Styles
- Scrap & Broken Gold
- Dental Gold

A Better Gold Selling Experience in St. Louis
Unlike many gold and silver buyers near me in St. Louis who simply pay based on melt value, Diamond Banc evaluates your items holistically. We often pay premiums for designer jewelry and factor in the value of any diamonds, ensuring you receive the highest possible offer.
Why Clients Across St. Louis Choose Diamond Banc
Selling gold, diamonds, and fine jewelry in St. Louis should feel secure, simple, and rewarding. At Diamond Banc’s Clayton office, clients benefit from a trusted process designed to maximize value while eliminating the stress typically associated with selling jewelry. Here’s what sets us apart:
Transparent, Accurate Evaluations
Our Market Director provides a clear breakdown of your jewelry’s value, factoring in current gold prices, diamond market trends, and brand desirability. Whether you’re selling a diamond engagement ring, gold jewelry, or a Rolex, you’ll always understand exactly how we arrived at your offer.
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.
Top-of-Market Payouts
We consistently pay more than traditional pawn shops or jewelry stores in St. Louis because we operate as a nationwide luxury jewelry buyer. With access to a vast resale network, we’re able to extend industry-leading offers for gold, diamonds, and luxury timepieces.
Immediate, Hassle-Free Funding
Once you accept our offer, payment is issued immediately—no waiting periods, no delays. Whether you need fast cash for your gold, want to liquidate a diamond ring, or are exploring financial flexibility with a jewelry equity loan, we make sure you leave with funds in hand.
A No-Obligation, Zero-Pressure Environment
At Diamond Banc, you’re in control. Our evaluations are complimentary, and there’s never any obligation to sell. Many St. Louis clients choose us because they appreciate the professional, private setting where they can explore their options without pushy sales tactics.

Additional Services Offered in St. Louis
At Diamond Banc in St. Louis, we provide a full range of services designed to meet the diverse needs of our clients. As a trusted jewelry buyer, we specialize in purchasing fine jewelry of all types—including diamond engagement rings, estate jewelry, gold jewelry, and sought-after designer pieces.
We are also recognized as leading Rolex buyers in St. Louis, catering to both collectors and those ready to sell their luxury timepieces. From a vintage Rolex Submariner to a modern Daytona, our experts offer highly competitive prices backed by national resale connections.
When it comes to diamonds and diamond jewelry, our evaluations are precise and professional. Each diamond is assessed based on market demand and the four Cs—cut, clarity, color, and carat weight—to ensure you receive a fair and accurate offer. Whether you’re selling a loose diamond, a diamond engagement ring, or designer diamond jewelry, we provide unmatched transparency and value.
Beyond outright selling, Diamond Banc also offers Jewelry Equity Loans in St. Louis, giving clients the ability to access immediate funding while still retaining ownership of their prized pieces. This flexible option is ideal for those who want to leverage their luxury assets without permanently parting with them.
With Diamond Banc, St. Louis clients can expect a seamless, stress-free experience with immediate funding and top-of-market payouts. Whether you’re selling your valuables or seeking a collateral loan, our team delivers personalized solutions tailored to your needs.
Beyond Gold & Silver: Our St. Louis Buying Services
Diamond Banc in St. Louis is more than a gold buyer—we also purchase:
We also offer Jewelry Equity Loans for those seeking short-term funding without selling their valuables outright.
Your “Trusted Gold & Silver Buyer Near Me” in St. Louis
Whether you’re in Clayton, Chesterfield, or anywhere in the metro area, Diamond Banc makes selling your gold and silver simple, transparent, and rewarding. Unlike pawn shops or basic gold buyers, we evaluate your items for their true market worth—often paying more for designer or diamond-accented pieces.
Contact Diamond Banc St. Louis today to see how much your gold, silver, and fine jewelry are worth.
Our Offices Nationwide
Diamond Banc operates in key cities across the U.S., making it easy to access trusted jewelry selling and loan services near you.