Imitation/Composition GOLD Leaf 25 sheets 14x14cm Size : 5.5 x 5.5" ( 14cm x 14cm ) Color : # 2.5 Composition gold is a mixture of 88% copper and 12% zinc. Thickness - approx 1 microns Product Information: Multi purpose gilding leaf, applicable onto all kinds of materials like wood, ceramic, glass, metal, paper, fabric, plastic, polyresin etc. Industrial use for such are in Interior Decoration, Renovation, Picture Framing. For hobbiest, can be used in gilding vases, and ceremic onaments, Furtnature restoration, Wall motifs, Scribe and Scrolls, Scrapbooking, Cards, Picture framing, Artision handicrafts. Please note these are imitation Gold leaf, which means they DO NOT contain any Gold. It is also known as composition leaf, and Dutch Leafs. They are used as a substitute to GENUINE GOLD leafs. Please note the leafs contain copper, and will oxidize when exposed to air, especially in humid and heated places. After application it is necessary to coat the finished product with a coating to prevent it from oxidizing.