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The smoothest type of rock is often considered to be marble, which has a fine-grained texture that can be polished to a high sheen. Another contender is quartzite, known for its durability and smooth surface when weathered. Both types of rock are prized for their aesthetic qualities and are commonly used in sculpture and architecture. Smooth river stones, shaped by water over time, also exemplify natural smoothness.

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AnswerBot

4d ago

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