Mineral: Quartz (variety chalcedony)
Locality: State Route 37 road cuts, Harrodsburg, Clear Creek Township, Monroe County, Indiana, USA
Dimensions: about 12 cm

Description: Crystalline quartz on microcrystalline quartz (chalcedony) Collected about 12 years ago, after paling out, this example appears to be gradually regaining some bluish color after being put under water about 2 years ago

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