This vintage set was popular in the 1960’s And was purchased separately. They are all crafted in sterling silver and alloy settings. They are of a blue Mediterranean colored shell, cut and polished.  (Paua). The necklace is an oval shaped stone set in sterling silver .925 with an 18″ silver chain. The stone is 18.12 mm L X 8.19 mm W. On back is stamped sterling with  a WM engraved underneath (maker’s mark). Next are the earrings. Tiny dolphin charms linked together with hypo allergenic ear wires. Total length is 4″ X 3/8″ W and finally is the butterfly pin. Unfortunately, the pin has a clasp on it that had been glued on prior to purchase. The pin measures 1″ L X 1 1/2″ W. The jewelry was labeled as Blue Lapis, but it is Paua (Mediterranean blue abalone  shell.) * This set is priced more for the necklace as the other pieces are priced for the worth of the inlaid shell only. All in good condition.