1950s triangular silvertone bumpy texture with cabochon blue resin "moonglow" center with faux-pearls in the corners clip back earrings. Marked "NAPIER PAT. PEND." Measure: 1 1/4 inches long by 1 3/8 inches wide. Condition: Very good; some minor wear to faux-pearls noticeable only on close inspection. A pair of earrings like these except square and with brown moonglow centers is shown on pg. 288 of Melinda L. Lewis & Henry Swen's book "The Napier Co.: Defining 20th Century American Costume Jewelry.