Month: December 2022

Gem Focus December 2022 – Tanzanite and Other Varieties of Zoisite

Posted on December 13, 2022 by Çiğdem Lüle, PhD, FGA, GIA GG, DGA

Soft blue and purple pleochroism of tanzanite has been dazzling gem lovers since the 1960s. Named after its type locality Tanzania, tanzanite gained a lasting niche in the colored stone market. Thanks to a strong…

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