1920's Art Deco Earrings w/ Diamonds in Platinum1920s Art Deco Earrings w Diamonds in Platinum. These dazzling Art Deco earrings feature . 94 carats of Old European Cut diamonds and are finished in platinum. The earrings are really more like two sets of earrings in one, as they work with a stud that holds the drop portion through a loop that dangles from the stud. Such a fun and exciting piece of beautiful Art Deco style!