Mountain Stone


  • Mountain Stone  is a very plastic, strong clay that offers a beautiful color. The moderate iron spotting enriches glazes and the fired clay. Once you use Mountain Stone, you will be hooked- spots and all!
  • Dry clay is also available for an additional $.14/lb at each weight. Please call for ordering.
  • Quantity Price
    25-49 $0.64
    50-99 $0.576
    100-499 $0.512
    500-999 $0.48
    1,000-1,999 $0.416
    2,000-3,999 $0.384
    4,000-7,999 $0.352
    8,000+ $0.32
Weight 1 lbs


If you are looking for a speckled clay, be sure to try our Mountain Stone. In a reduction firing, iron specking produces an irregular brown specking pattern in the clay offering various options for a covering glaze. We have blended a diverse amalgam of fire clays, ball clays and stoneware clays to achieve superior handling qualities and firing effects. Our Mountain Stone is a strong, durable clay developed for oxidation and reduction kiln atmospheres. It fires dark brown with speckles in reduction and light brown in oxidation kiln atmospheres.



Cone: 8-10

Wet Color: Red Brown

Fired Color
Oxidation: Light Brown/Buff
Reduction: Speckled Medium Red Brown

Texture: Medium Coarse
Penetrometer Target: 7.5
Avg. Shrinkage ±2%: 12.2%
Avg. Water Absorption ±1%: 2.1%

Additional information

Weight 1 lbs
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