What We Buy

Diamond Engagement Rings

Selling a diamond engagement ring is one of the most emotionally significant financial decisions a person can make. Divorce, estate liquidation, an upgrade — whatever your reason, you deserve discretion and a fair price.

At Sell Diamonds NYC, we've purchased thousands of engagement rings from all types of sellers. Our specialists evaluate both the center diamond and the setting separately, ensuring you get full value for every element. We buy solitaires, halo rings, three-stone designs, vintage, antique, and modern styles alike.

We pay significantly more than pawn shops and estate buyers because we know the real secondary market value — and we have the buyer network to justify it.

Loose Diamond Stones

Whether you've inherited a loose stone, removed a diamond from a setting, or have a collection you're looking to sell — we are New York's most active buyers of individual loose diamonds.

We evaluate every stone across the four Cs: Cut, Color, Clarity, and Carat weight. Our gemologist examines each diamond under magnification and compares it against current Rapaport pricing to give you the strongest possible offer.

We buy certified and uncertified stones. If your diamond is uncertified, we can evaluate it in-house — no lab fees required on your end.

• Minimum: 0.25ct (¼ carat)
• All shapes: Round, Princess, Oval, Cushion, Emerald, Pear, Marquise, Radiant
• D–Z color, FL–I3 clarity
• Natural diamonds (lab-grown evaluated case by case)

Diamond Jewelry

We are active buyers of all diamond-set jewelry — from everyday diamond stud earrings to high-end Tiffany, Cartier, Van Cleef & Arpels, Harry Winston, and Bulgari pieces.

Our valuation accounts for both the intrinsic diamond and precious metal content and the brand premium for signed designer pieces. Many buyers ignore the designer value — we don't.

GIA / EGL / AGS Certified Diamonds

A grading certificate from the Gemological Institute of America (GIA), European Gemological Laboratory (EGL), or American Gem Society (AGS) removes subjectivity from the valuation process — and that's good for you as a seller.

When your diamond comes with a cert, we can price it directly against current Rapaport market data for that exact combination of cut, color, clarity, and carat weight. This typically results in a meaningfully higher offer than uncertified stones of identical quality.

Bring your certificate — or tell us the cert number and we can look it up. We work with GIA, EGL, AGS, IGI, and HRD reports.

Luxury & Diamond Watches

The pre-owned luxury watch market is robust — and our buyers understand exactly what drives value. We buy Rolex, Patek Philippe, Cartier, Audemars Piguet, Omega, IWC, Breitling, and other high-end brands.

We pay particular attention to diamond-set timepieces, bezel diamonds, dial diamonds, and diamond-bracelet models, which require specialized knowledge to appraise correctly. We have that expertise in-house.

Bring the original box, papers, and service records if you have them — they increase your offer. But we buy without them too.

Rare, Fancy Color & Large Diamonds

For diamonds above 3 carats, fancy color stones (yellow, pink, blue, green), and other rare or exceptional pieces, standard pricing models don't apply. These diamonds require a specialist network — and that's exactly what we provide.

We have direct relationships with private collectors, international dealers, and auction houses. If you have a stone of significant value, we can facilitate a transaction that captures its true market worth — not a discounted liquidation price.

Our team has handled transactions from $50,000 to over one million dollars. Confidentiality and security are guaranteed throughout the process.