12K Gold filled brooch - Flower of Rhinstones

12K Gold filled pin in a 1-1/2" circle a smaller open gold circle of aquamarine & white rhinestones in a flower design. Stones are all prong set. Rollover clasp. Marked 12GK, but cannot make out the designer's signature Shows very well especially on dark colors. Fairly good condition - gold shows some tarnish, but rhinestones really shine. PG-003