Description Mountain Stone is a diverse amalgam of fire clays, ball clays and stoneware clays to achieve superior durability, handling qualities and firing effects. It fires dark brown with speckles in reduction and light brown in oxidation kiln atmospheres. In a reduction firing, iron specking produces an irregular brown specking pattern in the clay offering various options for a covering glaze. Characteristics Cone: 8-10 Firing Range: High-Fire Clay Type: Stoneware Texture: Medium Coarse Best for: Hand Building Coloration Wet Color: Red Brown Oxidation Color: Light Brown to Buff Reduction Color: Buff to Darker Iron Variations Statistics Avg. Absorption Rate at Cone 8 (+/- .5%): 0.5% Avg. Absorption Rate at Cone 10 (Oxidation): .18% Avg. Absorption Rate at Cone 10 (Reduction): 0.00% Avg. Shrinkage Rate at Cone 8: 13.25% Avg. Shrinkage Rate at Cone 10: 15% Images Image 1: Mountain Stone in Oxidation (Electric Kiln) Image 2: Mountain Stone in Reduction (Gas Kiln)