shop › Facet flat white cup 3 Image 1 of 3 Image 2 of 3 Image 3 of 3 Facet flat white cup 3 $50.00 Wild clay and stoneware blend, shino glaze, woodfired to 1,300 degrees in the catenary arch kiln for 30 hours. Add To Cart Added! Wild clay and stoneware blend, shino glaze, woodfired to 1,300 degrees in the catenary arch kiln for 30 hours.