Vase with Ox-Blood Glaze
Dimensions- : 8 in. high (20.32 cm)
Credit LineGift of David Kamansky and Gerald Wheaton
LabelChemistry has long been an important component of ceramic art, as potters have experimented with different clays and glaze materials to achieve different effects. The bodies of these vases are porcelain, which is made primarily from the clay mineral kaolinite. When fired at high temperatures, the clay vitrifies to form a hard, translucent material that is highly resistant to thermal shock and chemical solvents. The rich red glaze coating the outside of the vases is made largely of silica, potassium and aluminum oxide colored with copper carbonate and fired in a reduced oxygen kiln. This type of glaze was first developed by the Chinese in the 18th century and has been copied by potters around the world ever since.