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Gravel is not in one full piece... And you cant sculpt with it. With clay, you can sculpt with it, and it's Soft and mushy. The textures between the two are different, and most of the uses =] =D ;D...
Ceramic materials are end products of clays, glass and cements, typically fired at high temperatures of up to 2000 degrees, F. Ceramic materials are hard, porous, and brittle, and can be...
Clay:It contains fine particles. It has the capacity to hold water. It doesn't hold air. Therefore it is very heavy in weight. Sand:It contains large particles. It has large spaces in between them....