Cornwall Stone Substitute Stoneware Opal Glazes More plastic than porcelains but

More plastic than porcelains but semi-vitreous to promote stability in the kiln

Larger additions of fine material can impart matteness if the glaze is able to take it into solution (sourcing alumina from kaolin

USG Hydrocal® White Gypsum Cement is especially suitable in thin

Natural iron body with medium plasticity

Cornwall Stone Substitute Stoneware Opal Glazes More plastic than porcelains butThe original Cornwall Stone Mine is now closed, and this material is now produced synthetically by Laguna Clay Co. Because it was mined from granite rock (traditionally, from the Cornwall area, UK), it is actually composed of a combination of minerals, and the ratio of these chemicals could vary somewhat drastically. This means that potters who used this material over long periods may notice different results when using the same recipes. An advantage