This black gemstone bracelet features 18 by 12mm black barrel agate and 4mm black onyx accented with a sterling silver focal bead. This 7 inch handmade bracelet is finished with a lobster claw clasp and a 2 inch extender chain. Measures from 7 to 9 inches. This Black Agate and Black Onyx Bracelet is from the Basic Black Collection of fine handmade jewelry.