Platinum and gold ring with hessonite garnets

A rare Art Deco 18 carat gold and platinum ring in a geometrical construct of two juxtaposed angled elements, one in 18 carat gold and the other in platinum with 21 square-cut blind-set hessonite garnets (app. 3.6 carats); numbered 32827. France, circa 1920.

weight: 9.89 grams
ring size: 16 mm / 5 ½ US