Goryeo porcelain was a pottery made during the Goryeo Dynasty, which refers to celadon made during the Goryeo Dynasty, such as celadon, white porcelain, black yuja, and iron yuja, but has generally been recognized as a reference to Goryeo celadon.
Goryeo celadon was developed under the influence of pottery from the Song Dynasty and its techniques were much better than those of the Song Dynasty, so the Song Dynasty people praised it as the best in the world.
The excellence of Goryeo celadon can be attributed to its beautiful color. Some are yellowish or yellowish brown, but others are especially beautiful.
There is National Treasure No. 115 of the celadon Sanggamdang First Gate Wan, which represents the period.