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Measurements: 85 x
65 x 36 mm Description: A large nodule of azurite with
a lovely blue colouring, that is actually an aggregate of tiny azurite
crystals. The bottom right image was taken in natural sunlight. Chemical Composition: Cu3(CO3)2(OH)2
Hardness on Mohs Scale: 3.5 – 4 Location: Tsumeb, Specimen Code: NTS 001 US $ 280
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