Peacock Chaocopyrite is a copper iron sulfide, CuFeS2 and rates 3-4 on the Mohs Scale. The beautiful iridescence shows through after it is bathed in vinegar, similar to how copper turns green after exposure to the elements.
Mystical and associated with calming and grounding among other things.
This listing is for one specimen measuring 1 in. long and weighing 20-25 grams.
They are all unique and iridescent with varying colors of violet, turquoise, green, gold and blue.