This lovely necklace is from the 1930's. It is genuine untreated coral and the beads range in size from 4mm to over 9mm. The clasp is 800 silver (marked) and has a coral cab that is 8mm. The necklace ha been restrung on silk and is 18 1/4 inches. The beads are in very nice condition and the necklace weighs 22.9 grams.