![266 Umbria](http://www.standardclay.com/cdn/shop/files/266_C5_d6e906ee-158d-4129-8551-97fd5d2cfdad_{width}x.jpg?v=1683744569)
C/4-5
Gives a reduction-like dark brown color in an electric kiln. Smooth and plastic. Good for all techniques. Contains manganese. We recommend a cone 5 firing for this clay.
Cone 4 Average Shrinkage 11.5% Absorption 2.4%
Cone 5 Average Shrinkage 12.5% Absorption 1.0%
Product Number: 10266