Azurite crystals. The specimen at top right is polished, the specimen at bottom is in its natural state. Azurite is a hydrated copper carbonate mineral. Its name refers to its colour, azure. In medieval times, the mineral was ground up and used by painters as a blue pigment. Azurite's colour also makes it popular with mineral collectors.

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TOP06672656

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達志影像

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RM

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