Fast – Secure – Immediate Payment

Free Evaluation

Visit us at our secure showroom for a free appraisal.

No Obligation Offer

Our GIA trained staff will offer a no obligation risk free offer.

Secure Payment

We pay immediately with all accepted offers.


Our knowledgeable experts will examine your fine jewelry including rings. To guarantee the maximum payout to you, our experts take into consideration the era, the workmanship, the quality and marketability of your jewelry evaluation.


Achieve maximum price for your diamonds by consulting with our GIA trained expert. We will share our 35 years of experience and knowledge with you at no cost. We have paid fair market value for thousands of diamonds we have purchased in the past and we guarantee the same to you.


We can buy any size estate. Our reputation and knowledge in the diamond industry guarantees us access to any amount of capital needed to purchase any size estate. We will analyze your fine estate pieces one at a time, to estimate their fair market value. We will base our offer on different factors like age, condition, rarity, quality and the maker of the piece (example Tiffany, Buccellati, Asprey, David Webb, etc.)


We are interested in vintage and fine timepieces, like Rolex, Audemars-Piguet, Panerai, Jaeger-Le-Coultre, Cartier, Piaget, Breitling, Hublot, Patek Philippe, Vacheron-Constantin, IWC, Harry Winston, Franck Mueller, Bedat, etc. Secure payments are made immediately after acceptance.

LARGE Diamond & Jewelry Buyers

We Buy Your

Jewelry               Engagement Rings               Estate Jewelry Diamonds               Large Diamonds               Watches               Rolex

Designed trademarks and brands are the property of their respective owners. Union Square Diamond Buyers is not affiliated with Rolex S.A., Rolex USA, Cartier, Patek Philippe, Vacheron Constantin, or any of their subsidiaries, or any of the other brands we purchase.

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