 Former Craig Spence house in Kalorama, DC
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 TheTwin Sisters Mountain, North Twin Sister, South Twin Sister, Skookum Peak, Hayden and Little Sister, Twin Crest Peak
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 Fluorite spinel twin, 2 cm on 7 cm specimen. Composition plane horizontal. Naica,Chihuahua, Mexico.
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 Twin Tower in Kuala Lumpur
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 5 Z9A1807 H.jpg
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