Onyx The word Onyx comes from the Greek, having the same spelling, and meaning fingernail. Onyx is a variety of chalcedony, formed by parallel quartz and moganite bands, alternating light and dark colours. It was already used in jewelry in the Ancient Egypt, where it was used against the evil eye, and to bring happiness and wealth to its carrier. Onyx eases objective thinking, so it is suitable for those who suffer from melancholy. It helps in taking quick decisions, and in stabilizing emotions faced to the fear of the unknown; it also strengthens meditation. It has stabilizing effects on our organism, improves the proper body functioning.