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Sec. I Ch. 25: Condition Physical Properties

Sec. I Ch. 25: Condition Physical Properties Page of 249 Sec. II Ch. 1: Classification of Gems Text size:minusplusRestore normal size  Mail page Print this page
Sec. I Ch. 25: Condition Physical Properties Page of 249 Sec. II Ch. 1: Classification of Gems
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Nicols. Lapidary of History Gemstones.
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