Gem Focus November 2022 – Featuring Citrine: a fall colored gem that anyone can afford…

Posted on November 11, 2022 by Çiğdem Lüle, PhD, FGA, GIA GG, DGA

Quartz, the second most common mineral in the world’s crust composition, has many uses in our lives. The quartz group encompasses species and varieties, use of which predates history. Unfortunately, for the majority of gem…

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