Celadon is a type of blue-green–glazed ceramic that has been admired across East Asia for many centuries. Its appeal lies in the quiet, shifting tones of its translucent glaze—colors that seem to breathe between blue, green, and soft gray. While today celadon is appreciated worldwide, its cultural roots lie especially in China, from where its influence traveled to the Korean peninsula and later to the Japanese archipelago.

They were not mere imitations of jade but a way of expressing jade-like ideals through widely available materials—something both familiar and elevated. Over time, they were praised as “like jade, and at times beyond jade.”

The distinctive color of celadon comes from iron in the glaze. Its greens emerge through reduction firing, a process in which the fire in the kiln consumes the available oxygen, creating an oxygen-deprived condition. In this environment, iron shifts from ferric (yellow-brown) to ferrous (blue-green) states, creating the cool tones associated with celadon. Small natural variations—thicker glaze that settles into soft pools, slight shifts in clay color, shrinkage of clay body or the pace of cooling—give each piece its own inner glow or gentle cloudiness. These subtle qualities are part of what people have cherished for so long.

Beyond China, celadon inspired new ceramic traditions. Potters on the Korean peninsula developed Goryeo celadon (10th–14th centuries), known for its serene blue-green surface and the delicate sanggam inlay technique. In Japan, imported celadon wares entered tea culture from the 12th century onward, eventually giving rise to local interpretations known as seiji. While each region cultivated its own aesthetics and methods, their techniques were shaped through respect for the legacies that came before, continuing the centuries-long pursuit for the inner light that celadon represents.