Collector John Conklin holds a glass jellyfish nestled inside a marble made by JD Anderson.
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More than 300 glass marbles and spheres are displayed in a lighted curio cabinet.
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Mr. Conklin says he can hold a piece in his hand and tell whether it is a perfect sphere or has imperfections.
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Tiny letters spell out the words "Glass Addiction" inside this marble.
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A bubble gum machine holds the marbles John Conklin has had since childhood.
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An octopus-themed sphere by Josh Mazet.
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A skull pendant by a Japanese artist.
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Pieces from Hot House Glass artists Larry Zengel and Brett Young, in Bowling Green.
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A white skull appears in the abdomen of this spider by artist Wesley Fleming.
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An eyeball by artist Jay Taylor.
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John Conklin serves as moderator of Glass Addiction at http://glassaddictionforum.com.
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