For this 3-strand necklace I started with the faceted oval 10x14mm blue opal stones and added cube-shaped blue opals with light turquoise and darker foiled turquoise colored seed beads. The three strands are 18 1/2″, 20 1/2″ and 21″ in length (including the clasp). The clasp is a metal 3-strand hook with little flowers for extra detail.