Vintage marked TAXCO MEXICO 925 and tested.  The necklace has sterling silver puffed links with oval links in the front that have some type of inlaid stone.  The stones are a “sea foam” color, not quite true green, but a soft and pretty color.  The oval / pear links with stones are 5/8” high.  The necklace is 16” long and closes with a box catch that snaps firmly shut.  The necklace weighs 26.46 grams.  It’s a beautiful piece with normal, mild surface scratches and light patina.  

Photos are enlarged for detail. 

Thanks for looking! As always, from a smoke free home.