A ballerina’s tutu-like relief is stunning! Made of red earthen clay, using the "kohiki" technique, a traditional Japanese technique where the clay is colored by applying a layer of white powder-clay before the transparent (or color) glaze. It results in a warm and plump impression. Each item looks a bit different because the way pinholes, iron in powder, marginal baked nuances occur varies from item to item. Less absorbent than general earthenware because it is fired and hardened in the higher temperature for many hours. Microwave/oven safe and stackable.