Antique Art Deco Cocktail Ring — 10-15ct Natural Sapphire & Old-Cut Diamond | Circa 1920

An exceptional Art Deco cocktail ring from circa 1920 — monumental in scale, extraordinary in conception. A piece of genuine rarity.

At its center sits a natural sapphire of between 10 and 15 carats, a stone of exceptional size. The sapphire has been pierced at its center and set with an old-cut diamond of approximately 0.30 carats, estimated SI clarity, F color. A jewel within a jewel, and a demonstration of extraordinary technical skill on the part of the original maker.

The sapphire is surrounded by a halo of diamonds that further amplifies its presence on the hand. The reverse of the ring is finely chased, a level of finish entirely consistent with high-end workshop production, where every surface of a piece was considered and executed with equal care.

• Period: Art Deco, circa 1920
• Metal: Platinum
• Central stone: Natural sapphire, 10-15 carats, pierced and set with an old-cut diamond
• Central diamond: Old-cut, approx. 0.30ct, estimated SI clarity & F color
• Accent stones: Diamond halo
• Plateau dimensions: 20 x 15 mm
• Total weight: 7.3 g
• Size: 61 FR — 9.5 US — T UK
• Hallmarks: Dog's head (French guarantee mark for platinum), partially legible maker's mark
• Notes: Number engraved on interior of shank
• Condition: Very good condition for age. Minor trace of repair.