England
Blue John Cavern, Castleton
Gem locality Documented siteProhibited, look only
What you could find
Reported finds from this ground.
Crystals and mineralsPhotos via Wikimedia Commons: Stephanie Clifford from Arlington, VA, USA (CC BY 2.0).
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Why this spot
Carboniferous Limestone with mineralised veins
One of only two Blue John localities on Earth (both at Castleton).
Keep exploring nearby
More spots in this area.