Stone ball

The terms Stone balls, "stone ball", "stone spheres", and "stone sphere" have been used to designate spherical stone objects of both natural and artificial origin. Different types of stone balls include:

Contents

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Natural

Artificial

External links

Stone round shot (cannonballs)

Stone balls (spheres) of Costa Rica

Carved stone balls of Scotland

Megaspherulites

Cannonball Concretions