These flashy dog-tooth Calcites coated with colorful, iridescent chalcopyrite hit the market in China back in 2014/2015 and we bought every decent one we could find and just located a small stash in the office. Translucent to milky white to gray Calcite scalenohedrons to over 2 cm are richly dusted with rainbow iridescent, micro Chalcopyrite crystals resulting in a breathtaking display piece! There are minimal nicks on the Calcite crystals but it is overall in good shape (most of these had some small damages, as they were hard to extract). There is some contacting along the periphery and the piece shows rounded saw cuts on back from being removed, but the specimen looks great from the well-oriented front display.