| 13bttgis ((CHALCOPYRITE)), $10 MINIMUM BID, Mexico, 7.5 x 5 x 5 cm, Cabinet, | |
 | Here is great looking iridescent blue, purple Chalcopyrite. These are treated to bring up color on the outside. Inside is still brassy yellow. If chipped the yellow will show up. Smaller specimens are sold to kids as peacock ore or Bornite but are really Chalcopyrite. This is a large and exceptionally showy. |
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