Vintage Coro Jewelry. Choker & Clip Earrings to match. White and Gray with gold and silver confetti thermoset in silver tone settings with leaf detail Earrings match in white. Excellent Used Condition. Choker with extender measures approximately 16" long. Earrings are approximately 1" long and about 0.5" wide. Coro, a partnership between Emanuel Cohn (the "Co") and Gerald Rosenberg (the "ro"), began producing jewelry in New York in 1901 and continued through the 1970s.