Sherd: Square Fragment from the Wall of a Circular Vessel

Guan ware: dark gray stoneware with lightly crackled, light grayish blue glaze. From the guan kilns near Hangzhou, Zhejiang province

Yue ware: light gray stoneware with celadon glaze over incised and carved decoration

Longquan celadon ware: molded, pale gray stoneware with lightly crackled, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Possibly Ru ware: light gray stoneware body with bluish celadon glaze. Possibly from the Ru kilns, Henan province

Longquan celadon ware: pale gray stoneware with matte-surfaced, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Guan ware: dark gray stoneware body with a misfired or degraded bluish green celadon glaze on the interior and with lightly crackled, grayish green celadon glaze on the exterior. From the Guan kilns near Hangzhou, Zhejiang province

Longquan celadon ware: pale gray stoneware with bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Guan ware: dark gray stoneware with celadon glaze

Longquan celadon ware: pale gray stoneware body with a lightly crackled, bluish green celadon glaze over molded decor. From the Longquan kilns in Zhejiang province

Guan ware: dark gray stoneware with lightly crackled, light grayish blue glaze. From the guan kilns near Hangzhou, Zhejiang province

Longquan celadon ware: molded, pale gray stoneware with matte-surfaced, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Longquan celadon ware: pale gray stoneware with misfired, lustrous, crackled, olive green glaze. From the Longquan kilns in Zhejiang province