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)
HMS Amethyst (1799) "Amethyst" captured sundry spars. In November 1808 "Amethyst" captured the French frigate "Thétis" at the Action of 10 November 1808. British casualties in the engagement were severe, with 19 killed and 51 wounded, but French losses were several times larger, with 135 dead and 102 wounded. "Amethyst" had been severely damaged in the engagement and repairs took 71 days to complete at Plymouth. Seymour's victory was rewarded: Seymour himself was presented with a commemorative medal, £100 (with £625 to share among the wounded) and the freedoms of Cork and Limerick. The Admiralty awarded him a gold medal; this was one