
Prasiolite (also known as green amethyst or vermarine) is a green, transparent variety of quartz that derives its color from the presence of ions within the crystal structure. Prasiolite is not the only green variety of quartz, and it should not be confused with prase, chrysoprase, chrome chalcedony, or quartz colored by inclusions of chlorite or epidote.
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Prasiolite (also known as green amethyst or vermarine) is a green, transparent variety of quartz that derives its color from the presence of ions within the crystal structure. Prasiolite is not the only green variety of quartz, and it should not be confused with prase, chrysoprase, chrome chalcedony, or quartz colored by inclusions of chlorite or epidote.
thumb|"Green amethyst" prasiolite Natural prasiolite is exceedingly rare, having been first discovered in the early 19th century in Lower Silesia, Poland with only a few other deposits known to exist. Natural prasiolite deposits include Płóczki Górne (Poland), Bahia (Brazil), Thunder Bay (Canada), and Farm Rooisand (Namibia).
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).