Black & white real pearl necklace with abalone shell, glass & beads, adjustable

This piece is so unique and the workmanship stunning! Hundreds of small pearls in white and black make up the bulk of this thick necklace, and little chunks of abalone shell, glass, and acrylic beads make up the rest. The clasp is a large and very modern spring ring. It is adjustable 18" to 20.5" Gorgeous and in excellent used condition!