Amethyst of synthetic quartz is used. Treated amethyst is produced by gamma ray, X-ray or electron beam irradiation of clear quartz (rock crystal) which has been first doped with ferric impurities. On exposure to heat, the irradiation effects can be partially cancelled and amethyst generally becomes yellow or even green, and much of the citrine, cairngorm, or yellow quartz of jewelry is said to be merely "burnt amethyst". The Greek word "amethystos" may be translated as "not drunken", from Greek "a-", "not" + "methustos", "intoxicated". Amethyst was considered to be a strong antidote against drunkenness, which is why wine goblets were
Amethyst RPG also takes into account the disruption of modern technology by magic; the more technologically advanced an item is, the more likely that the Enchantment Disruption Field that encompasses the globe will affect it. Rules in detail are provided for all facets of technological and magical interaction. "Amethyst" was originally published under 3.5 rules and recognized with an Honorable Mention for Best Setting in the 2008 Gen Con ENnie Awards. "Amethyst: Foundations" by Chris Dias was previewed at Free RPG Day of 2009, and then published by 2010 by Goodman Games as a new science fantasy setting for 4th edition "Dungeons