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Amethyst is a purple variety of quartz (SiO. 2) and owes its violet color to irradiation, impurities of iron (Fe3+. ) and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. [2][3][4] The irradiation causes the iron Fe3+.
Amethyste. An amethyst stone from South Africa. Amethyste or Amethystos (Ancient Greek: Ἀμέθυστη, romanized: Améthustē, lit. 'non-drunk') is supposedly a nymph in Greek mythology who was turned into a precious stone by the goddess Diana / Artemis in order to avoid a worse fate at the hands of the god Dionysus, thus explaining the ...
Amethystea. Amethystea is a genus of plants in the family Lamiaceae, first described for modern science by Linnaeus in 1753. It has only one known species, Amethystea caerulea, commonly known as blue amethystea. [2] It is native to China, Japan, Korea, Central Asia (Tibet, Xinjiang, Kazakhstan, Tajikistan, Kyrgyzstan), and parts of Russia ...
Rubis. -class submarine. The Rubis class is a class of nuclear-powered attack submarines operated by the French Navy. It comprises six boats, the first entering service in 1983 and the last in 1993. Two additional units originally planned were cancelled as a result of post- Cold War budget cuts. All six submarines of the Rubis class are based ...
French submarine. Améthyste. (S605) 1 diesel-alternators SEMT Pielstick 8 PA 4V 185 SM; one auxiliary engine, 5 MW. Améthyste is a nuclear-powered attack submarine of the French Navy, the fifth of the Rubis type. The boat's name is a pun on a precious stone (Amethyst) and the acronym AMElioration Tactique, HydrodYnamique, Silence ...
Laccaria amethystina, commonly known as the amethyst deceiver, or amethyst laccaria, [1] is a small brightly colored mushroom, that grows in deciduous and coniferous forests. The mushroom itself is edible, but can absorb arsenic from the soil. Because its bright amethyst coloration fades with age and weathering, it becomes difficult to identify ...
Throughout history, the Metamorphoses has been used not only as a compendium of information on Ancient Greek and Roman lore, but also as a vehicle for allegorical exposition, exegesis, commentaries and adaptations. True enough, in the medieval West, Ovid's work was the principal conduit of Greek myths.
Eryngium amethystinum, the amethyst eryngo, [1] Italian eryngo [2] or amethyst sea holly, is a clump-forming, perennial, tap-rooted herb.Its stem is 30 to 50 cm long and is light blue to purple in colour.