Gold-Leaf-23.50kt Dukaten-loose-Book of 25 Sheets of Gold Leaf Size - 3-3/8"3-x3/8" Surface/Loose Leaf 18 Gram Weight. 23kt Dukat 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. Each book contains 25 sheet of gold leaf, size 3 3/8" x 3 3/8" per sheet. This is surface leaf therefore it is Loose Leaf. Each Book of 25 sheets has a coverage area of 1.98sq ft. (without consideration for waste or overlap) This product is great for glass gilding and surface gilding. It is loose in the book and should be applied with a gilders tip or other method of transfer, Gold-Leaf-23.50kt Dukaten-loose-Book available here.