Cameo is a low-relief engraving art that carves colored stratified stones. Or not. Sometimes shells are carved, ancient cameos, often zoned agates (sardonyx), plaster, glass or even fine and precious stones. At GEMME Joaillerie, the Athena ring is a biscuit cameo superimposed on a geometric hematite set on a geometric silver mounting for a contemporary style typical of the brand's spirit.