Stone ball (disambiguation)

A stone ball is a spherical man-made stone object.

Stone ball or stone sphere may also refer to:

Natural

 * Spherulite, a small, rounded body occurring in vitreous igneous rocks
 * Cannonball concretion, a natural cementation found in North Dakota
 * Cave pearl, concentric layers of calcium salts found in limestone caves
 * Products of spheroidal weathering

Artificial

 * Stone spheres of Costa Rica, artefacts of unknown purpose from the Diquís culture
 * Carved stone balls, artefacts of unknown purpose from prehistoric Scotland
 * Various projectiles:
 * Round shot, a type of cannonball
 * Bolases, a throwing weapon