18-karat yellow gold. Front piece features gate-like filigree and round-cut diamonds, 0. 18 total carat weight. Middle piece has place for one picture on front, decorative solid back. Back piece has place for one picture on front, decorative solid back. Figaro chain necklace, approximately 30"L. Pendant, approximately 1 1/2"L x 5/8"W. Lobster clasp.