Product information for 23.75K Genuine Gold Leaf: 99.0% Au, 0.7% Ag, 0.3% Cu Size of each leaf: 3 1/8″ x 3 1/8″ Thickness of each leaf: not less than 0.107 microns 1 Booklet covers: 1 5/6 sqft Our 23.75K Genuine Gold Leaf is also available in 4 booklet packages for both the loose and transfer types. A total of 100 leaf sheets.