Abalone pendant and chain, sterling, vintage Mexico

Beautiful pendant on a sterling serpantine chain (15" end to end). The pendant appears to be abalone chips set is a sterling pendant with silver rope trim. Oval pendant measures 7/8" x 1 1/2" it has a nice loop if you wanted to change chains. Chain marked sterling, and pendant marked 925 Mexico TC-129. Piece is actually much prettier in actuality. Flash lightened the photo quite a bit.