99marbles131 Posted September 22, 2011 Report Share Posted September 22, 2011 Has anyone ever seen a sulphide marble with surface ribbons around the outside of the mib? I've never seen one, but someone told me about a collector he knew that came across one at a yard sale, and picked it up for $0.50. If someone knows of one or has a photo i'd love to see it! Link to comment Share on other sites More sharing options...
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