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 (1903) tow on her way to the breaker's at Milford Haven, the tow parted in a gale and heavy seas and the New Quay lifeboat took off seven of "Amethyst"'s eight crew; the captain was taken off two days later in the continuing storm by Aberystwyth lifeboat. HMS Amethyst (1903) HMS "Amethyst" was a third-class protected cruiser of the "Topaze" class of the Royal Navy. She was launched in 1903, served during World War I at the Dardanelles and Gallipoli, in the Mediterranean and the South Atlantic. She was sold for scrap in 1920. She was laid down in January 1903