Gemstone Optical Properties

Step 2: Advanced Gemology

Lesson 1

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gemstone optical properties - hambergite
The hambergite crystal on this albite shard has silky to pearly luster, depending on orientation. “Hambergite on Albite,” Sahatany Valley, Sahatany pegmatite field, Antananarivo Province, Madagascar. © Rob Lavinsky, www.iRocks.com. Used with permission.

We tend to take light for granted. …

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