Vintage Southwestern sterling silver Turquoise heart earrings. Earrings are stamped QT sterling Good vintage condition Approx measurements: 1 inch As pictured This is what I found on my research: “The QT marking on Carolyn Pollack jewelry stands for Quoc Turquoise. It is often found on early sterling silver pieces from her Southwest-style line, which was produced in New Mexico and often marketed through QVC. While QT sometimes represents a separate company, it is commonly associated with her early vintage designs”