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top quality
but the piece is even better in person
unique crystals
A beautiful crystal group of very sharp
Specimen# CO712B33
Sphalerite with Quartz Amethyst top qualityHard to photograph, and better in person, this attractive three dimensional mound of black Marmatite Sphalerite is comprised of sharp, semi lustrous, well formed dodecahedral crystals which are associated with a few gemmy prismatic Quartz crystals. Excellent for the locality, and better than most I have seen from the mine. The Black Cloud was one of the most famous specimen producing locales in Leadville and was one of the last operating mines in
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