Pete Knudsen

Barite, Calcite image

Barite, Calcite

Amethyst image

Barite image

Quartz Japan-law twin image

Quartz Japan-law twin

Amethyst scepter image

Amethyst scepter

Vanadinite after Wulfenite image

Vanadinite after Wulfenite

Quartz phantoms image

Quartz phantoms

Malachite, Azurite, Rosasite image

Malachite, Azurite, Rosasite

Spessartine on Topaz image

Spessartine on Topaz

Hemimorphite image

Amethyst image

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Calcite image

Smoky Quartz, Microcline image

Smoky Quartz, Microcline

Smithsonite image