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rock is natural while stone is artificial.the rock found under the earths surface while the stone found anywhere on our earth's surface.

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Gwendolyn Nicolas

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2y ago
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14y ago

Rock is a name given to a natural earth material composed of an aggregation of clasts or crystals of differing minerals.

The word boulder is used to describe a piece of rock of a certain size. In this case a boulder is a clast of rock with a minimum diameter of 200mm (UK and European standards) and 256mm (US). Boulder is the largest individual clast sized recognised and is therefore given to any individual clast larger than the minimum diameter specified here.

Source of particle size data:

Weltman, A.J. and Head, J.M. (1983). Site investigation manual. CIRIA Special Publication 25 / PSA Civil Engineering Technical Guide 35.

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8y ago

Pebbles are smaller and usally more smoother.

A Pebble was once a part of a rock, which has broken away, and been shaped (smoothened) by the either the action of water or air or ice.

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14y ago

it is sedimentary

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Q: What is the difference between a rock and a boulder?
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