Gem Quality Zoisite; Tanzanite and Other Varieties…

Posted on March 1, 2014 by Cigdem Lule PhD, FGA, GG (GIA)

Although zoisite is best known for its blue-violet variety tanzanite, other colors of zoisite exist in nature. A number of dealers carry rare green, pink and yellow varieties alongside tanzanite. Most buyers are unfamiliar with…

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