It's centered with natural red coral beads. Also has small tube and round red coral beads. Some of the black coral tubes have sterling silver cap beads on each end. The clasp is handmade sterling silver. From an estate, not sure of its origin. Black coral is endangered and may be difficult to find in the future. These are true coral, not resin or plastic. Each bead is unique and has beautiful reddish colors near the ends. Weighs over 64 grams.