Simple yet modern silhouettes underscore the COS jewelry collection. Crafted from semi-precious stones, this necklace is adorned with a string of black globe-shaped beads that are each separated by neat knots for a contemporary finish. The silver-plated recycled brass extender chain offers an adjustable fit. Lobster clasp Brass is a versatile material that can be recycled numerous times without losing any of its properties Shell: 75% Semi-precious stone, 25% Post-consumer recycled brass. Coating: 100% Silver. Excluding trims Length: 15.74". Color: black