Vintage mahogany obsidian sterling silver pebbled pendant necklace! By Chapal Zenray. Made with solid .925 sterling silver Features a square panel inlay of mahogany obsidian gemstone. Pebbled border accents Rests on a .925 sterling silver chain necklace. Chain stamped '925' Pendant stamped '925' and with jeweler's hallmark ('NF') Excellent condition! Chain length: 18" (approx.) Pendant size: 29mm x 16mm (approx.)