Etymology · Physical origins · Uses · ProductionA marble is a small spherical object often made from glass, clay, steel, plastic, or agate.These balls vary in size. Most commonly, they are about 13 mm (1 ⁄ 2 in) in diameter, but they may range from less than 1 mm (1 ⁄ 30 in) to over 8 cm (3 in), while some art glass marbles for display purposes are over 30 cm (12 in) wide.Marbles can be used for a variety of games called marbles.
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