Art Deco Garnet Ring 900 Silver Rose Cut Gemstones Sz 5So elegant and finely made is this vintage Art Deco era silver and garnet ring, prong set with faceted rose cut stones in an openwork design, circa 1930s. The antique ring consists of 900 silver (just under Sterling) and has an oblong shape, prong set with rose cut faceted Bohemian garnet gemstones with deep red color. The face of the ring measures approximately 7 8 of an inch in length, and the shank measures a size 5 on my ring mandrel. It weighs 3.