This mug is wheelthrown with porcelain at my home studio. It is glazed with a deep blue gloss and layered with a white chun glaze which creates this depth and movement within the glaze. It is glazed with the white chun on the inside. There is a single blue drip visible on the white interior as shown. It is 7.5cm tall and 8 cm wide at the rim and dishwasher and microwave safe.