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Johnkoivulaite, a mineral that changes from deep violet to near colorless when viewed with polarized light, is the newest member of the beryl family, which includes emerald, aquamarine and morganite. The mineral is named after gemologist and author John Koivula, who is best known for his contributions to inclusion research and photomicrography. Story continues at our blog...http://bonafinejewelers.thejewelerblog.com/

Johnkoivulaite, a mineral that changes from deep violet to near colorless when viewed with polarized light, is the newest member of the beryl family, which includes emerald, aquamarine and morganite. The mineral is named after gemologist and author John Koivula, who is best known for his contributions to inclusion research and photomicrography. Story continues at our blog...http://bonafinejewelers.thejewelerblog.com/

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