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Measurements: 50 x 41 x 30 mm Description: A
lovely, gemmy group of quartz crystals, ranging in colour from clear
to light smoky. The white mineral is possibly feldspar. Weight of Specimen: 75.5 g Chemical Composition: SiO2 Hardness on Mohs Scale: 7 Location: Brandberg, Namibia. Specimen Code: NBB 216 US $ 120
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