Sterling Silver Pillbox Locket Pendant

both the chain and pendant are stamped and tested at 925 sterling silver,chain is Serpentine and measures about 19 inches from end to end, the locket measures about 1.25 inches across,pendant opens and could be used to hold small objects or even a photo if cut to size, pendant has a pretty design both on the face and sides , the stone i am not sure of ,but it is darker redish pink with a smokey look,total weight is about 22 grams