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 drawing the attention of PLA snipers. By the time the shelling stopped at about 11:00, 22 men had been killed and 31 wounded in all. "Amethyst" had received over 50 hits and holes below the waterline were plugged with hammocks and bedding. During this time the destroyer "Consort" was sighted, flying seven White Ensigns and three Union flags, steaming down from Nanking at 29 knots. Admiral Madden, the Flag Officer, second in command, Far East Station, ordered the destroyer HMS "Consort" (Commander Robertson) to go from Nanking to the "Amethyst"'s assistance, and ordered the frigate "Black Swan" (Captain Jay) to