This is a rare enamel guilloche blue forget me not flower puffy heart charm with a red orange background; it measures about 5/8" x 1/2" and it is marked STERLING. The charm does show some wear and a couple to pitted spots under high magnification to the enamel but not so visible to the naked eye and the back has some minor surface scratches and a pinpoint ding. Very beautiful in person and it would make a lovely addition to your bracelet. The last picture shows a lovely picture of blue forget me not flowers.
Thank you for looking!