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Blackjack Clay™ (SS-2) Natural Kiln Fire Stoneware, 50 lb (22.7 kg)

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Blackjack Clay - SS-2 Mined Stoneware Clay

Blackjack Clay is a blend of several natural clays mined from the earth in East Texas. The unique process of blending and wet screening results in a clay that has a silky smooth texture with great plasticity.

This stoneware clay has a chocolate brown color when wet, yet fires to a soft buff/tan color. It is excellent for throwing on a potter’s wheel, hand building, slab rolling and sculpting or modeling. This clay is good for beginners as well as professional artists.

This clay fires in a kiln from cone 6 – cone 10. It takes glazes well, and glazes can be applied directly to the greenware for single firing or to bisqueware with a second glaze firing. This clay is good for salt firing and raku firing. Always test fire for glaze compatibility.


Firing range: Cone 6-10 (2269º-2381ºF)
Water content:
Plasticity (IP Atterberg):
Carbonate content (CaCO3):
Drying shrinkage:
Firing shrinkage at Cone 6: 8%
Porosity (water absorption) at Cone 6: 12%
Dry bending strength:
Fired bending strength at Cone 6:
Thermal coefficient (a25-500ºC):

For more detailed product instructions and tips, please view our Blackjack Clay Instructions.

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