{"product_id":"vintage-cobalt-blue-uranium-czech-glass-necklace-czechoslovakia-marked-clasp","title":"Vintage Cobalt Blue Uranium Czech Glass Necklace: Czechoslovakia Marked Clasp","description":"This rare Art Deco necklace is crafted from cobalt-colored uranium glass beads, marked with a “Czechoslovakia” clasp that confirms its authentic Bohemian origin. The cobalt oxide gives the beads their deep-blue color, while uranium oxide makes them glow brilliantly under UV light\u003cbr\u003eThe graduated faceted beads are separated by clear glass spacers, and the original spring ring clasp is stamped “Czechoslovakia,” a mark used primarily in the 1920s–1930s\u003cbr\u003eDetails:\u003cbr\u003e* Era: 1940s–1950s\u003cbr\u003e* Origin: Czech (Bohemian) glass\u003cbr\u003e* Materials: Cobalt blue faceted glass beads, clear faceted glass AB spacers, brass spring ring clasp with \"Czschoslovakia\" marking\u003cbr\u003e* Length: 16 inches end to end\u003cbr\u003e* Weight: 40 grams\u003cbr\u003e* Condition: Excellent vintage condition with light age-related wear","brand":"Ava Masquerade","offers":[{"title":"Green","offer_id":55947445698726,"sku":null,"price":83.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0708\/7462\/8262\/files\/a919d02f-20cf-452c-bb12-f052cdd363be.jpg?v=1763784629","url":"https:\/\/www.avamasquerade.com\/products\/vintage-cobalt-blue-uranium-czech-glass-necklace-czechoslovakia-marked-clasp","provider":"Ava Masquerade","version":"1.0","type":"link"}