Chalcophyllite

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A beautiful, classic crystal of rather large size (fully 1 cm!), from these famous mines circa mid to late 1800s. This crystal has the sharp hexagonal form and riveting blue color for which Cornwall became famously known. Such fine examples, all more than 100 years old, are hard to come by. This is a superb specimen for crystal size, well displayed on matrix. They don't make them like this from other mines, still to this day. Ex. Mark Feinglos Collection