Gold Leaf 23.5kt Dukaten Orange Patent - Pack Manetti 23.5kt Dukaten Orange Gold Leaf Pack of 20 Books (500 Sheets) Size - 3-3/8"3-x3/8" Gold Leaf 23.5kt Dukaten Orange Patent - Pack is 18 Gram Weight 23.5K Dukaten or Ducat or Orange gold is a very early Karat weight. This came from melting down the Austrian "Dukat" coin that was a very popular form of currency in early Europe.  A Pack containing 20 Books of Gold-Leaf, each book contains 25 sheet of gold leaf, size 3 3/8" x 3 3/8" per sheet.  This is Patent Gold-Leaf also known as Transfer Leaf, each leaf is mounted to special tissue paper.  A packs coverage area is 39.5 square feet; each book of 25 sheets has a coverage area of 1.98sq ft. These measurement amounts for coverage do not take into consideration waste or overlap.  This product is great for surface gilding. Gold-Leaf-23.5kt Dukaten-Orange Patent-Pack available here.