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Gold leaf is gold that has been hammered into thin sheets (usually around 0.1 μm thick [1]) by a process known as goldbeating, [2] for use in gilding. Gold leaf is a type of metal leaf , but the term is rarely used when referring to gold leaf.
For example, aluminium foil is usually about 1 ⁄ 1000 inch (0.025 mm), whereas gold (more malleable than aluminium) can be made into foil only a few atoms thick, called gold leaf. Extremely thin foil is called metal leaf. Leaf tears very easily and must be picked up with special brushes. [citation needed]
Some metal leaves may look like gold leaf but do not contain any real gold. This type of metal leaf is often referred to as imitation leaf. [3] Metal leaves are usually made of gold (including many alloys), silver, copper, aluminium, brass (sometimes called "Dutch metal" typically 85% Copper and 15% zinc) or palladium, as well as platinum.
Owing to the comparative thickness of the gold leaf used in ancient gilding, the traces of it that remain are remarkably brilliant and solid. [3] Fire-gilding of metal goes back at least to the 4th century BC. Mercury-gilding was invented by Chinese Daoists in the 4th century CE and was used for the gilding of bronze plaques. [5]
On 3 May 2007, the Royal Canadian Mint unveiled a Gold Maple Leaf coin with a nominal face value of $1 million and a metal value of over $3.5 million, referred to as a Big Maple Leaf. [5] [6] It measures 50 cm in diameter by 3 cm thick and has a mass of 100 kg, with a purity of 99.999%.
Her look comes together with the addition of thick gold bangles on her right wrist and leaf-shaped earrings. Bidot's hair flows in natural beachy waves, with soft makeup for an organic glam look.