Siam Sterling jewelry was manufactured from the 1930s through the 1980s, and was a very popular motif in the 1950-60s. Although Siam officially changed its name to Thailand in the 1940s, the “Siam” nickname for this style of jewelry stuck. Siam silver is officially called “Nielloware.” Niello is a black mixture of copper, silver, and lead, used as an inlay on engraved…
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