Amethyst even if the iron concentration is low. Natural amethyst is dichroic in reddish violet and bluish violet, but when heated, turns yellow-orange, yellow-brown, or dark brownish and may resemble citrine, but loses its dichroism, unlike genuine citrine. When partially heated, amethyst can result in ametrine. Amethyst can fade in tone if overexposed to light sources and can be artificially darkened with adequate irradiation. Amethyst was used as a gemstone by the ancient Egyptians and was largely employed in antiquity for intaglio engraved gems. The largest Ancient Egyptian amethyst mines are located at Wadi el-Hudi and those mines may be the
The Amethyst Ring The Amethyst Ring The Amethyst Ring by Scott O'Dell is the third novel in the historical fiction trilogy started by "The Captive" and "Feathered Serpent". Julián Estaban, who is impersonating the Mayan god Kukulcán, fights and escapes from a powerful gold hungry conquistador, Hernán Cortés. Kukulcán's followers captured Rodrigo Perdoza, a bishop carrying a message to Cortés to detain Julián. Julián wants to be a priest and asks the bishop many times to make him one, but in the end he lets the Mayan priest sacrifice him, and Julián takes the bishop's amethyst ring. Cortés attacks and captures Kukulcán's city,