Peridot is one of the other rare gemstones that exhibit a green colour. Sometimes called olivine, it possesses a characteristic hue due to the presence of iron, a more yellowish green than that of the emerald, ranging from light green to olive green. Known since antiquity, it notably adorns Greek jewellery. Its main deposits are in Arizona in the United States, Egypt, Myanmar, Pakistan, and Brazil, but also in Norway or Russia. However, the one from Zabarğad or St John’s Island in the Red Sea, likely exploited since the Pharaonic era, is the most renowned. A finely engraved peridot intaglio with the portrait of Cleopatra II was even discovered and is now preserved in the Baltimore Museum. Indeed, the colour green and the Pharaohs have a long history together.