Although strongly influenced by Chinese styles, the ceramics produced in Korea have their own individual characteristics. The earliest pottery, a hard grey stoneware, dates from the 1st century bc. Porcelain was made from the 10th century. A particularly fine celadon ware was produced during the 12th century, with inlaid decoration in black and white, applied with great subtlety. Blue and white porcelain was made from the 15th century, but only for the Korean Royal Household. After a period of turbulence in Korea in the late 16th century, when many potters moved to Japan, the industry was re-established and large blue and white jars were a speciality. Korean ceramics often appear crude compared to the refined Chinese porcelain of the same period, but the ‘hand-made’ quality and free decoration has great appeal.