Antique Art Deco Iridium Platinum & Diamond Engagement Ring

Elegant and finely balanced, this antique Art Deco engagement ring is crafted in iridium platinum and showcases the refined geometry characteristic of the period.

At its center is a sparkling old European cut diamond, weighing approximately 0.26 carats, securely set in a square, hand-finished platinum head. The center stone is flanked on each shoulder by vertically aligned accent diamonds, creating a subtle stepped effect that draws the eye inward while maintaining a low, graceful profile. Delicate milgrain detailing and crisp linear engraving along the shoulders further emphasize the ring’s architectural Art Deco aesthetic.

The interior of the band is stamped “IRID TRUE PLATINUM,” identifying the maker as Samuel Buchsbaum & Co. of Chicago, active during the early 20th century, their engagement rings were all stamped TRUE.

Size: US 7.75

Materials: Iridium platinum, old European cut diamond (.26 ct center), accent diamonds

Condition: Very good antique condition with light, age-appropriate wear; diamonds are secure and lively, engraving remains crisp, and the platinum shows a soft patina consistent with age while remaining structurally sound.