Vintage 925 sterling silver dainty natural stone pendant on silver plated chain

Vintage delicate dainty necklace. In excellent condition. The pendant is made of natural stone (pink and grey) and 925 sterling silver. It is not stamped, but I took it off another sterling silver necklace that was stamped 925. The chain is also vintage, and silver plated. 18" chain 0.5" pendant (with bail)