Bill Yedowitz

Fluorite image

Calcite, Galena, Siderite image

Calcite, Galena, Siderite

Copper pseudomorph after a scorpion image

Copper pseudomorph after a scorpion

Copper image

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Variscite, Wardite, crandallite image

Variscite, Wardite, crandallite

Fluorite image