Antique Diamond Jewelry | A. Brandt + Son

Antique diamond jewelry is defined as much by how the stones were cut as by the diamonds themselves. This collection gathers rings, pendants, earrings, and brooches set with old mine, old European, rose, and transitional cut diamonds from the Georgian era through Contemporary, each hand-selected by Annette and Elan Brandt, dated to its era, and authenticity guaranteed.

Why Buyers Trust A. Brandt + Son

For nearly four decades, buyers across the country have trusted A. Brandt + Son for authentic antique and estate jewelry. Many travel to our Narberth showroom to see a piece in person, and every order, near or far, carries the same guarantees.

Authenticity Guarantee

Every piece is hand-selected, dated to its era, condition-graded, and backed by our guarantee.

Complimentary 2-Day Shipping

All domestic orders ship complimentary UPS 2nd Day Air, signature required and fully insured.

Complimentary Sizing

Most antique rings include complimentary sizing, and we say upfront when a setting cannot be sized.

Hassle-Free Returns

If a piece is not right, return it within our window in its original condition, no hassle.

What is the difference between old cut and modern diamonds?

Old cut diamonds were shaped by hand for candlelight, with taller crowns, smaller tables, and open culets that give bold, chunky flashes. Modern diamonds are cut by machine for even, maximum sparkle. Many collectors prefer the warmth and character of old cuts.

Are antique diamonds graded and certified?

Antique diamonds can be graded for color and clarity, though they were cut to older standards. Some come with reports and others can be sent for grading. We describe each stone honestly and can discuss any available documentation with you.

How should I care for antique diamond jewelry?

Clean gently with warm water, mild soap, and a soft brush, and avoid ultrasonic cleaners on delicate or foil-backed pieces. Have settings checked periodically to keep stones secure. We are always glad to advise on care for any piece bought from us.

Shop Our Timeless Collections of Antique and Vintage Jewelry

From Georgian rarities to Art Deco engagement rings, A. Brandt + Son brings together antique and estate jewelry you will not find anywhere else. Every collection is hand-selected by Annette and Elan Brandt, dated to its era, and offered with the guarantees that have defined the shop since 1988.

Shop online or visit our Narberth salon, and buy with the confidence of working directly with the family.

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Collection: Diamond Jewelry

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Edwardian Platinum Diamond Navette Ring

ELSA PERETTI for TIFFANY & CO. Estate Platinum "Diamonds-By-The-Yard" Necklace

Retro 14k/Platinum Diamond & Ruby Buckle Ring

Retro Platinum Diamond Half Band

Art Deco 14k Diamond & Sapphire Line Bracelet

AYDIN Estate 18k/Platinum Diamond Band

Edwardian 14k Diamond Knot-Motif Earrings

Estate 14k Diamond Band

Estate 18k Diamond Roller Ring

Art Nouveau 15k Enamel, Diamond, & Ruby Repoussé Lady Locket

Art Deco Platinum GIA Diamond Engagement Ring 3.04ct

Victorian 14k Diamond Navette Ring

Edwardian Platinum Diamond & Sapphire Flower Basket-Motif Pendant/Charm

Estate 18k 3.06Ct Old Cushion Mine Cut Diamond Ring

Victorian 18kt Diamond + Enameled Cherub Earrings