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
Amethyst Initiative trends before and after 1984; based on World Health Organization (WHO) data from 2011 and 2014, foreign countries with lesser drinking ages often have fewer alcohol-related deaths per capita annually than the USA. Amethyst Initiative The Amethyst Initiative is an organization made up of U.S. college presidents and chancellors that in July 2008 launched a movement calling for the reconsideration of U.S. legal drinking age, particularly the minimum age of 21. The National Minimum Drinking Age Act of 1984 requires all US states to raise their minimum age for purchase and public possession of alcohol to 21 or face a