Polcini Jewelry (1911-1980s) Polcini Jewelry was founded in 1911 in Mamaroneck, not far from New York by Ralph Polcini, an Italian emigree. Handmade by skilled craftsmen, using high-quality materials including silver, gold plating, fine rhinestones and natural stones Polcini jewelry surpassed many competitors. In 1949 Ralph Polcini renamed his company ‘Leading Jewelry Manufacturing Company’ and […]