Dating to the 1920s or so may I offer this oval shaped silver tone metal (with a rhodium overlay, I believe) filigree pin set with a dark blue glass paste at the center and bordered by blue and white enameled florals and leaves. Safety catch at the back to hold the pinstem in place. Condition is very nice with no problems I can spot.
Metal Content: Rhodium plating over a base metal I believe - no hallmarks.
Size: 1-9/16" x 1-5/16"
Weight: 13.4 grams
Final Comments: Absolutely stunning!