This is wheel thrown stoneware white clay kiln fired to over 2,200F.
 
Perfect for next to the kitchen sink to hold your sponge and keep your counter clean! Sponge shown for size; it is a scotch dual-sided sponge.

Microwave & dishwasher safe, but I recommend for the longer life of the ceramic to hand wash. Beware of thermal shock- read about it in the information section.