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Emerald Crystal on Matrix on Acrylic Base Chivor Mine, Chivor, Boyacá Department, Colombia This fine specimen features a single, sharp, stout, simple 1-cm hexagonal prism with a basal termination and minor pyramidal modifications emerging from a druse of albite crystals on sedimentary rock matrix typical for the locality. The crystal shows higher than normal transparency and has a nice green hue which is caused by chromium impurities and, in part, by the lack of iron, which has been taken up in this geological setting by the associated pyrite nestled among the albite. This specimen would be a fine addition to any collection. Measuring approximately 6.1 x 4.4 x 3.5 cm. Height 7 cm on acrylic base. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing
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Emerald Crystal on Matrix on Acrylic Base Chivor Mine, Chivor, Boyacá Department, Colombia This fine specimen features a single, sharp, stout, simple 1-cm hexagonal prism with a basal termination and minor pyramidal modifications emerging from a druse of albite crystals on sedimentary rock matrix typical for the locality. The crystal shows higher than normal transparency and has a nice green hue which is caused by chromium impurities and, in part, by the lack of iron, which has been taken up in this geological setting by the associated pyrite nestled among the albite. This specimen would be a fine addition to any collection. Measuring approximately 6.1 x 4.4 x 3.5 cm. Height 7 cm on acrylic base. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing
Stichworte: Pyrite, Mineral