Hard, tough and durable, Onyx is ideal for carving and engraving or fashioning into beads, spheres and bowls, making paper weights, pen holders, book ends and boxes. Used in inexpensive jewellery Onyx is also used for stone inlay work. With its consecutive layers of different colours, it makes excellent material for cameos and some variegated pieces are used for the carving of multi-coloured figurines.