Ruby Red Sherman Screwback Earrings

Possibly garnet. These earrings are a vintage piece of costume jewelry by the Canadian company Sherman. Founded by Gustave Sherman in Montreal, Quebec, in 1947, the company was known for creating high-quality costume jewelry that rivaled fine jewelry until it closed in 1981. The company used high-quality Swarovski crystals and meticulous craftsmanship, often setting stones by hand in double-plated rhodium, gold, or japanned settings.