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 sunbird the Congo, Democratic Republic of the Congo, Ethiopia, Gabon, Kenya, Malawi, Mozambique, Namibia, Somalia, South Africa, South Sudan, Swaziland, Tanzania, Uganda, Zambia and Zimbabwe. Between three and eleven races have been proposed, including: Amethyst sunbird The amethyst sunbird, also called the black sunbird ("Chalcomitra amethystina"), is a species of passerine bird in the Nectariniidae family. It is native to the Afrotropics, mostly south of the equator. They are commonly found in well-watered habitats, and undertake seasonal movements to visit flowering woodlands. The demise of some woodlands have impacted their numbers locally, but their range has also expanded along with the