Marbles

Marbles are small, round, spherical objects made from glass, clay, steel, plastic, or agate. They 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 … Read more