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
HMT Amethyst HMT Amethyst HMT "Amethyst" was a naval trawler requisitioned by the Admiralty prior to the Second World War. She was sunk in the second year of the war. "Amethyst" was built as the commercial trawler "Phyllis Rosalie" by Smiths Dock Company, South Bank-on-Tees and was launched on 15 January 1934. Her first owners were the Boston Deep Sea Fishing & Ice Co Ltd, based at Fleetwood. In 1935 she set a number of records for catches landed at Fleetwood, and was present at HM King George V's Silver Jubilee Spithead Review, representing the port of Fleetwood. She was sold later