Amethyst element impurities), and the presence of trace elements, which result in complex crystal lattice substitutions. The hardness of the mineral is the same as quartz, thus it is suitable for use in jewelry. Amethyst occurs in primary hues from a light pinkish violet to a deep purple. Amethyst may exhibit one or both secondary hues, red and blue. The best varieties of amethyst can be found in Siberia, Sri Lanka, Brazil and the far East. The ideal grade is called "Deep Siberian" and has a primary purple hue of around 75–80%, with 15–20% blue and (depending on the light source)
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,