Elegant unsigned beauty from the 1950s.  Large domed prong set chaton and marquis rhinestone stones in a heavy high quality silver tone setting.  (Possibly Kramer)

Measurements:  2" in diameter  1/4" profile

In pristine condition.  All  rhinestones are present and brilliant.  No yellowing or dead stones. No flaking or discoloration to the silver tone.  Pin closure in perfect working condition.