This diagram shows the varying sizes of soil particles from large gravel particles through to tiny clay particles.
Soil
Particle diameter
Gravel
More than 2 millimetres
Coarse sand
Between 2.00 and 0.20 millimetres
Fine sand
Between 0.20 and 0.02 millimetres
Silt
Between 0.02 and 0.002 millimetres
Clay
Less than 0.002 millimetres
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