Little cobalt blue enamelled star of David lapel pin, BBG, Judaic B'nai Brith Girls pin on a little chain attached to a pin of initials "EMET" and a little key on the chain. Circa 1950s-60s, I would guess. Unmarked, star is at least 10K yellow gold...I believe the letters are gold too, unsure about the key. Lovely condition.