Estate Roman scene Micromosaic Necklace with Diamonds, Sapphire set in 18 Kt Gold. Micromosaics are created from tiny fragments tesserae, generally made from glass or enamel, set to form small pictures. According to the Gemological Institute of America, one square inch of micromosaic jewelry can have as many as 1.400 pieces of tesserae. Italy is given credit as the origin nation of micromosaics and they often depict ancient Italian landmarks or scenes from nature such as animals or plants.