Lovely Lime Green Ball Vase - Diamond Design

This is pretty ball vase with a diamond design. It has a lime green translucent glaze like celadon, but it is unmarked and I am not sure what it is. It also looks like porcelain, but I am uncertain about that too. It is a pretty auction item. It measures approx. 5 inches round, and the top opening is 1 inch cross. It is in very good condition, no chips, no cracks, and no visible crazing.