French Art Deco platinum, sapphire, and diamond ring. A rare and ravishing original French Art Deco jewel, this platinum ring centers a luminous 3.20-carat no-heat Ceylon sapphire, accompanied by a GIA Sapphire Origin Report. The elongated sapphire glows with the unmistakable hue of bright cornflower blue—a color long associated with the finest Sri Lankan stones. Accented by shimmering single cut diamonds set in gleaming platinum, the design is beautifully refined, capturing the elegance of…