GRANITE Crystalline Glaze
Recipe
Notes
From Crystal Glazes Book 1 by Fara Shimbo, page 134. Maturing Cone: 8 to 10 but is at its best at cone 9. Crystal number: Moderate amount of zinc silicate crystals, but will also produce a very large number of titanium and/or rutile crystals Rate Of Growth: For zinc silicate crystals, 1-2 cm diameter per hour on tiles, 1 cm/h on vessels Crystal Color: Eggshell to light yellow, opaque. Crystal Shape: Round with lighter edges; little structure visible. Ground Color: Ecru to white, opaque in oxidation, mauve to purple in reduction. Crazing: Impossible to see. Color Response: Tends to dull colors somewhat. Crystals in copper glazes will often have maroon outlines. Takes all colorants well except nickel, which should not be used. Cobalt will color the rutile crystals a peacock blue; other colorants do not affect the rutile crystals much. Seeding properties: Lousy. More information in Crystal Glazes book 1 page 134. Much more background information in other sections of the book.
Description
Cone 8-10 - High titanium variant