Priced Per Pound Must purchase in 25 lb increments You can find small sample sizes of this clay by clicking here. Grolleg Porcelain #365 Cone 6 Same properties as Porcelain #257 -- white, tight, translucent when thin -- but formulated to fire at a lower temperature. Shrinkage: 13.5% at C/6. Absorption: .60% at C/6.
