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#### Agate

The `agate` pattern is a banded pattern similar to marble but it uses a specialized built-in turbulence function that is different from the traditional turbulence. The traditional turbulence can be used as well but it is generally not necessary because agate is already very turbulent. You may control the amount of the built-in turbulence by adding the optional `agate_turb` keyword followed by a float value. For example:

      pigment {

        agate

        agate_turb 0.5

        color_map {MyMap}

      }

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