1950s modernist silvertone and blue moonglow necklace with hook clasp. Marked "Napier." Condition: Excellent Size: 6.5 inches long by 5 inches wide. Interior circumference about 15 1/2 inches. A goldtone and brown moonglow version of this necklace is shown on pg. 272 of Melinda L. Lewis & Henry Swen's book, "The Napier Co.: Defining 20th century American Costume Jewelry."