PLEASE NOTE: These figures reflect an average of several samples tested in a series of oxidation firings. Samples were fired to maturity. Results have a 1-2% margin of error.
"My clay is moldy!" - Please be aware that, like any dark, damp, organic environment, blocks of moist clay are perfect growing grounds for mold. The type of mold that grows on clay is not harmful (though it may be a bit smelly), and is actually a desirable trait to many potters, as it acts as a natural plasticizer. If you have a mold allergy, please ask to inspect the clay before you buy it, so we can ensure that you do not get a block that contains mold.