Antique Art Deco 5.09ct Sapphire and Diamond Plaque Ring

A sapphire and diamond antique plaque ring mounted in platinum and 18ct white gold, the 5.09 carat sapphire certificated as natural untreated and measuring 10.5 by 7.5 mm, the diamond set openwork fancy cluster with millegrain decoration.

• Period – Early Art Deco, circa 1920
• Gem – Sapphire & Diamond
• Metal – 18ct White Gold & Platinum