Biscuit
Biscuit porcelain is a white, unglazed porcelain that was and is used for busts and reliefs.
It has a certain similarity to white marble, but is nowhere near as robust. For sculptors, bisque is only used to a limited extent, because it is less weather-resistant than marble and can therefore only be used indoors.
In the photo you can see a figure made of bisque porcelain mounted on a marble base.
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