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Stan Celestian: Quartz
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Stan Celestian: Quartz in Rhyolite
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drocnar: 88.4lb opalized pet wood
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drocnar: Opalized wood
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Joel Pee: Dyed agate slab of greens blues
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drocnar: Tumbled Saccum Agates
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drocnar: Tumbled Saccum Agates
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drocnar: Yellow/Green mossy agate
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drocnar: Yellow/Green Mossy agate
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drocnar: Yellow/Green Mossy agate
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drocnar: Yellow/Green Mossy agate
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drocnar: one of my Favorite tumbles.
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drocnar: Opalized pet wood
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drocnar: Opalized pet wood
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Stan Celestian: Epitaxial Pyrite over Barite
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Eliseo Martínez Castellano: Mineral Apofillita+Estilbita. La India
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howie516: FLUORITE
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micro mineral: Duftita
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earthbornrocks: Loaves and Fishes Tortuga Turtle
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Joel Pee: Rhyolite lithophysae - Maricopa County Ariz polished surface
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Joel Pee: iron pyrite cubes on matrix
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agebi89: Rhodochrosite Eulalia
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Joel Pee: stone forest
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Joel Pee: Lake Michigan agate
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Joel Pee: Amethyst slice of stalactite backlit in sun
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Joel Pee: Crystal house
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agebi89: Jodargyrite
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agebi89: Titanite, Magnetite
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Stan Celestian: Rutile
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howie516: MOONSTONE