Each book of gold leaf contains 25 leaves that measure 80mm x 80mm. 1 book of gold will cover an area of 0.16m² without waste or overlap. (The amount of waste can be determined by the gilder’s own level of expertise and will depend on the complexity of the surface being gilded.) The higher the gold content of a leaf the more resistant it will be to tarnishing. Gold Leaf of less than 22 carat should be protected from the atmosphere with a lacquer. Transfer Leaf is the same as loose leaf except that each leaf has been pressed onto a lightly waxed sheet of tissue paper which can be picked up, thus avoiding contact with the metal. The tissue is then offered up to the sized area and rubbed from behind so that the leaf transfers from the paper to the object to be gilded.