Sterling silver necklace showcases a double-sided lock pendant, offering two distinct looks in one piece. One side features a vibrant abalone shell inlay with iridescent swirls of blue, green, and purple, while the reverse side displays an intricate marcasite-style textured pattern with a central keyhole motif. The pendant hangs from a delicate sterling silver box chain, secured with a lobster claw clasp. This versatile accessory combines natural oceanic beauty with vintage-inspired detailing, making it a unique addition to any jewelry collection. Signed Judith Jack sterling silver. Box linked sterling silver chain measures 16" + 2" extender. Signed with Judith Jack hallmark + 925 on padlock and J J 925 on chain. In very nice pre-owned condition Material: 925 Sterling Silver Stone: Abalone Shell Pendant Shape: Padlock Chain Type: Box Chain Clasp: Lobster Claw Finish: Polished and Antiqued Style: Reversible Pendant Height: Approx. 0.75" Pendant Width: Approx. 0.5" Chain Length: Approx. 18" Metal Purity: 925 Weight: Lightweight Keywords: Iridescent, Mother of Pearl, Nautical, Bohemian, Vintage Style, Two-Sided, Symbolic, Gift for Her, Everyday Wear, Artisan, Mixed Media, Statement Jewelry, Box Chain Necklace, Silver Lock Measurements: • Chain Length: 18" • Pendant Drop: 0.75" • Pendant Width: 0.5"