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is not nearly so easy to produce as is earthenware and stoneware.
It requires a special white clay called kaolin, which comes
from decomposed granite. Porcelain also must have special kilns,
and even higher firing temperatures than other clays. After
firing, it is white, and sometimes translucent. Because porcelain
originated in China, pieces made with this clay and process
are known by that name, even today.
animation to the left symbolizes the highest firing temperature,
which is used with porcelain.