This square bottle body is fully covered with secret glaze.Secret glaze is a very precious method of making, which has been lost.Its color is somewhat like ivory white and creamy white. The porcelain body is very transparent and is a rare product.This square bottle has a small mouth, a square belly and a round base.This bottle with square exterior and round interior is simple and elegant in shape and has great collection value.H:12.5 W:4.5