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)
Amethyst Incident sail for Hong Kong. Next day the cruiser (flying the flag of the Flag Officer Second in Command Far East Fleet) and destroyer took over as escort and proceeded to Hong Kong. "Concord" was sent to Japan after being sworn to secrecy. "Amethyst" subsequently received a message of congratulations from King George VI: Future Governor of Hong Kong Edward Youde was on the British Embassy Staff at Nanking. At great personal risk he penetrated the Chinese Communist lines in an attempt to negotiate the release of "Amethyst" with the PLA. His negotiations came to naught. Youde later was made a