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PrasiolitePrasiolite, green-quartz or vermarine is a green-colored form of quartz, usually produced by artificially heat-treating amethyst. Since 1950, almost all has come from one small mine in Brazil. Natural prasiolite has also been observed in Lower Silesia in Poland. The gem has a refractive index of about 1.54-1.553. [1] Product highlightThis material is occasionally referred to as "green amethyst" which is considered a misnomer by gemologists. References
Categories: Gemstones | Quartz varieties |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Prasiolite". A list of authors is available in Wikipedia. |
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