Stippling

Capodimonte porcelain jar painted in the stipple style of Giovanni Caselli with three figures of Pulcinella from the commedia dell'arte, 1745–1750
graphics complex of a seashell with stipple shading modeled in Mathematica 13.1
graphics complex of a seashell with stipple shading modeled in Mathematica 13.1

Stippling is the creation of a pattern simulating varying degrees of solidity or shading by using small dots. Such a pattern may occur in nature and these effects are frequently emulated by artists.