Antique Vintage Blue Lapis Lazuli Filigree Necklace. Clasp is signed MADE in CZECHOSLOVAKIA The larger beads have gold specks. It looks to be genuine lapis lazuli but this has not been authenticated. They could be glass. In good vintage condition. Patina on the silver metal. Jewelry box not included. Czech glass became a leading jewelry preference and was used to create durable costume jewelry. Czech beads, along with the innovation of the pressed molded glass process in 1860, imitated genuine gemstones such as rubies, sapphires, and emeralds. Other glassmaking factories and companies soon began to imitate Czech glass jewelry worldwide. Most Czech jewelry in the United States was imported before World War II and was created between 1918-1939. Identifying Czech jewelry can sometimes be challenging, but there are particular distinctions and clues for collecting. Not all Czech jewelry is marked, but some include marks on the clasps, corners, and backings of pieces. A few of the most common hallmarks include “Made In Czechoslovakia,” “Czech-Slovakia,” and “Czechoslovakia.” Art Deco Era Czech jewelry designs were trendy and were often heavily soldered. This process helped to prevent fragmentation and extensive damage. Another distinct characteristic of Czech jewelry involves the delicate filigree links between glass beads and crystals on necklaces. 3660