Signed STERLING GURDAL Blue Green Silver Clip On Oval Earrings. I'm not a gemstone person and can't say for certain what the stones are in these but to my best they look like Azurite or Malachite or both? 

 1" high x 3/4" wide

One of the clips has a slight lean in back but doesn't affect wearing etc and both clips are in good tight clip condition. Might need a little polishing/cleaning but for the most part they are bright silver. Off coloring besides what I stated is reflections only.