청자, or "celadon," is a type of pottery that originated in Korea during the Goryeo Dynasty (918-1392). It is known for its distinctive green glaze, which is achieved through a specific firing process. The pottery often features intricate designs and is highly valued for its beauty and craftsmanship. The production of 청자 reached its peak in the 12th century, when artisans created various forms, including bowls, vases, and plates. This pottery is considered a significant part of Korean cultural heritage and is often associated with the artistic achievements of the Goryeo Dynasty. Today, 청자 is celebrated for its historical importance and aesthetic appeal.