Simulations of precious-stone beads began to be made as soon as feasible materials became available. From antiquity onward, we have replicas of stone beads made of glazed stone, faience, and other ceramics, and glass. In contemporary times, glass and plastic have become the predominant substitutes for stone beads, although materials of organic origin, such as bone and tusk, have also been used. Information is presented on the background, materials, and techniques for detecting such simulations, using primarily visual clues provided by macro color photographs.