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Amethyst is a violet variety of quartz. The name comes from the Koine Greek αμέθυστος amethystos from α - a- , "not" and μεθύσκω ( Ancient Greek ) methysko / μεθώ metho ( Modern Greek ), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness . [ 1 ]
Prasiolite (also known as green quartz, green amethyst or vermarine) is a green variety of quartz. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, [citation needed] but it has also been mined in the Lower Silesia region of Poland. Naturally occurring prasiolite has also been found in the Thunder Bay area of ...
For example, amethyst is a variety of quartz with a purple tinge due in part to iron impurities. Mineral varieties can be further subdivided into sub-varieties. [1] Unlike mineral species, mineral varieties are not defined or named by the International Mineralogical Association (IMA).
Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...
Types of synthetic quartz include citrine, rose quartz, and amethyst. Natural occurring quartz is not rare, but is nevertheless synthetically produced as it has practical application outside of aesthetic purposes. Quartz generates an electric current when under pressure and is used in watches, clocks, and oscillators. [62]
Learn about quartz vs. quartzite countertops pros and cons from experts, including differences in cost, care, and design possibilities.
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