Sterling silver Mother of Pearl and peridot pendant and earrings

Beautiful sterling silver mother of Pearl and peridot pendant and matching earrings. The earrings and the pendant are stamped 925, but I can not find a stamp on the chain. I purchased them used, but they are in great condition. I have too much jewelry so I’ve gotta get rid of some. Chain is included but don’t know if it’s sterling or not since I can’t find a stamp. Chain is approx 18-1/2” long.