One Blue guilloche enamel floral bar pin dates from the Edwardian Period, early twentieth century. Lovely details such as the guilloche pattern of rays emulating the radial folds of the iris and the Old Euro cut Diamond center for the flower, Milgrain etching border,  pasted with a diamond accent on the tips. Guilloche enamel was a favored technique of the famed Russian jeweler Carl Faberge. The diamond approx. 2.5mm, the flower is 10.8mm wide. Fish hook closure, it has 2 1/2" safety chain and 1" safety pin. The brooch pin is 1 5/8" x 10.8mm, no assay mark, tested for 18K. The safety chain and pin tested for 10K