This clay is the porcelain-like stoneware commonly known as Danish porcelain.

A.R.T. Moist Clay Whitestone I contains no sand or grog, but achieves its strength and tooth from coarse light fireclays. In oxidation, the clay is moderate white in color. In reduction a light gray tone emerges with subdued grayish semi-specks in the background.

A.R.T. recommends bisque-firing to cone 04–03 and glaze-firing to cone 5–10.

A.R.T. Studio Clay Company formulates its clay bodies using a principle called "multiple similar clays." By blending comparable clays together, the company’s dependence on just one mine or one clay is greatly reduced. The obvious advantage of this method is a higher consistency from batch to batch.

In creating its clay bodies, A.R.T. employs a three-step processing system instead of the two-step process used by most clay manufacturing companies. The clay is dry-blended, then wet-blended, and finally de-aired in a five-function, two-level, industrial-size pug mill, which cuts, pelletizes, shreds, de-airs, and pugs the clay. Similar to the meters used to measure gasoline, the water meters used on A.R.T.’s wet-blending equipment are periodically cleaned and recalibrated to maintain accuracy.

All A.R.T. moist clays feature a usable shelf life of one year if stored in an airtight container in cool conditions.