Wonderful  and regal describes this gold washed silver and clear rhinestone crown brooch from the 1920's to 1930's era.  The setting features intricate accent to the large emerald cut aquamarine colored glass center stone.  There are also three marquise cut ruby colored rhinestones that are riveted in the back.  All the stones are prong set and, although the pin does not have a maker's mark, it is stamped sterling on the back.  It measures 1 5/8" tall  and wide.