Antique Green Sardonyx Cameo Earrings in Sterling Silver

Antique sterling silver screw back earrings set with marcasite and two hand carved green sardonyx cameos. They measure 2 1/4" long. Marked sterling. One earrings has two marcasites missing and the other has one missing. Together they weigh 9.9 grams. Silver is tarnished and has original gunmetal patina from age. It is advised to not clean away this patina. C. 1890-1915