Very pretty sterling bangle. It is stamped Siam sterling. The bangle has light blue, deep blue and green enamel all the way around. There are 2 spaces with no enamel but with some silver design. This is the hinge and the clasp. There is a fine link sterling safety chain. Inside diameter is just shy of 2 1/4" The bangle measures approx. 10mm wide. Condition is excellent with no loss to the enamel. I would date this fine bangle at c1950's.