Sterling silver pierced earrings heart amber color jewelry

Earrings are in good condition, kept in a clean smoke free home - cat friendly. Earrings did not test as glass or gemstone so I do not know. They could be a stone that doesn’t register with my tester or could be a resin or other material. Heart pierced earrings are amber in color, marked 925, brand unknown, 9mm X 11mm X 4mm depth pretty heart shaped studs. I put new 925 backs on them. #jewelry #earrings #heart