Circa 1920s, Platinum, by Wise & Son, New York. This Art Deco ring, by the renowned New York city firm Wise and Son, features a brilliant white 1.68 carat gold mine cut diamond in a finely detailed geometric motif. Set with an additional 1.0 carats of sparkly white diamonds, it is perfect for a one-of-a-kind engagement ring or chic as an occasional ring. As one would expect of fine twenties platinum jewelry, the fabrication is meticulous and quality obvious. Excellent condition.