These necklace, bracelet, and earrings feature black agate natural stone medium (8mm) round beads accented with silver-plated hematite small (4mm) cubes. - The necklace is adjustable 18-21 inches using its silver-plated lobster clasp and extender chain. - The bracelet is adjustable 7 1/2-9 inches using its silver-plated lobster clasp and extender chain. - The earrings are on silver-plated ear wires.