Beautiful Art Deco Platinum & Diamond Ring with 0.91 cts

The Art Deco period gave the world some of its most architecturally beautiful engagement rings—and this platinum ring, dating to the 1920s–30s, is a masterwork of restraint, proportion, and technical precision.

The centerpiece is an Old European Cut diamond —the diamond cutting standard of the 1920s—carries a quality that modern brilliant cuts, for all their sparkle, cannot replicate: a deep, dimensional luminosity that seems to glow from within. The warm tone of this stone is entirely characteristic of diamonds from this era and is now actively sought by collectors of vintage engagement rings. In the context of an Art Deco setting, this warmth is not a limitation but a signature—a marker of period authenticity and a complement to the platinum's cool platinum brilliance.

Flanking the solitaire are six single-cut diamonds. The single cut—a simplified ancestor of the brilliant cut, with eight crown facets and a single pavilion facet—was the accent stone of choice during the Art Deco era. These tiny diamonds sit in a precise pavé setting, individually bezel-set into the knife-edge shank, a hallmark of the period's demand for geometric precision and maximum metal-to-stone integration.

The metal is platinum, marked with the hallmark B H38377 10% IRID PLAT—indicating iridium alloy, a period-standard practice for hardening platinum for jewelry applications. The total weight of 2.8 grams reflects the density of platinum and the generous metal usage required for both durability and the precise setting work. This is not a delicate piece; it is a solidly built heirloom.

The ring is currently a size 7.75 and is available for professional sizing should a different fit be needed.

Diamond:
Weight: 1=0.91 ct
Measurements: 6.15 x 5.99 x 3.88 mm
Color: M/N
Clarity: SI2
Cut: Old European Cut

Diamonds:
Weight: 6 = 0.12 cts total weight
Measurements: 1.1-1.3 mm
Color: H/I
Clarity: VS2/SI1
Cut: single Cut diamonds

Dimensions: 2.8 - 1.3 mm wide / 4.8 mm high off the finger
Metal: Platinum
Markings: B H38377 10%IRID PLAT
Size: 7.75 (inquire about sizing)
Circa: 1920-30's
Weight: 2.8 grams