French Art Deco Sapphire & Diamond Cocktail Ring Size:10.5 It opens up to reveal

It opens up to reveal two oval locket compartments for storing photographs or other small keepsakes

The stone is certified as

likely Burmese) AnchorCert Report 225729/20035239 - 1

and I'm guessing they were likely made as a private commission

They're mounted in closed back-silver settings

French Art Deco Sapphire & Diamond Cocktail Ring Size:10.5 It opens up to revealDATE: Late Art Deco, c. 1935 A stunning French Art Deco cocktail ring set with a principal cushion shaped blue sapphire and a combination of baguette and brilliant cut diamonds. The design is bold and very typically late deco, with geometric shapes and lines, while looking forward to a more mid Century modernist feel. Its crafted in platinum throughout, with the sapphire likely to be Ceylon origin with no evidence of heat treatment. STONES Natural