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question about Pyrite

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I have a collection of pyrite con cretins unlike anything I can find on the Internet. Can someone help me with the value?

asked Feb 8, 2014 by Judy (120 points)

2 Answers

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Judy, Please post some pictures.

answered Feb 9, 2014 by hershel (46,460 points)
0 votes

Judy, Pyrite commonly forms in sedimentary environments and takes the form of balls and rods with crystal faces on the outside. Occasionally you might see them as micro-crystals in concretions, but that is not where they usually form. Some pyrite that forms this way has a reasonable value, but I can only think of 2 or 3 localities in the USA where this is so. Most specimens will be $1 to $15 at rock shows. Also, sedimentary pyrite is inherently unstable and if kept in humid conditions can deteriorate into sulfuric acid and powder. Another reason why most people don't collect too many of these crystals. Please post some photos of your specimens.

answered Feb 11, 2014 by stonesinger (720 points)

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