Red / Green / Amber Stoneware

Stoneware
Stoneware clays are
plastic, secondary or sedimentary clays whose verifications is obtained
between 2200 oF and 2400 oF. Fired, their color goes from chamois or
clear gray to darker gray or to brown. They vary much in plasticity and
firing temperatures and there is not a clear distinction between fire
clays and stoneware. In fact, the classification of the types of clay
depends more on its ceramic use than on its true chemical or physical
nature or on its geological origin. The same clay can very well be used
as fire clay, to make some refractory brick, and to manufacture
stoneware fired at high temperature.

Many clays are usable to
manufacture stoneware without any modification. They can have the exact
necessary plasticity to be turned and present the specific characters
of stoneware in drying and firing. The small workshops of the last
century, which produced utility stoneware, usually used a clay body
extracted in the area and prepared without adding any other material.
This kind of natural stoneware bodies can give very pleasant colors and
textures and can well accept slips and glazes for stoneware fired at
high temperatures.