Gold-Leaf-23.50kt Dukaten-loose-Pack of 20 Books (500 Sheets) Size - 3-3/8"3-x3/8" Surface/Loose Leaf 18 Gram Weight 23.5K 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. 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 surface leaf therefore it is Loose Leaf. 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 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-Pack available here.