People often are confused about the difference between stoneware (high fire clay) and earthenware (low fire clay). I found a nifty chart online that offers up some easy ways to compare the two and clarify the strengths and weaknesses between them:
Differences in an undecorated piece of stoneware and earthenware:
Stoneware
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Earthenware (ceramic ware)
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Impervious to water (water tight)
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Not impervious to water (cannot hold water)
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Chip resistant
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Chips easily
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Color: Buff or terra cotta
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Color: white
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Feel: textured
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Feel: chalky
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Look: like pottery
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Look: rough white
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Looks great undecorated or decorated.
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Can only use when decorated.
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Can withstand high/low temp.
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Cannot withstand high/low temp.
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Oven safe
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Not oven safe
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Suited for household use.
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Suited for decorative use
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Painting bisque: Wipe off mistakes.
Glazes flow: bisque is not porous
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Painting bisque: Cannot correct mistakes
Glazes adheres to bisque: bisque is porous
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Firing: Leave the bottom of the piece dry and place on shelf
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Paint or glaze the bottom of the piece and stilt on shelf.
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