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The standard gold bar held and traded internationally by central banks and bullion dealers is the Good Delivery bar with a 400 ozt (12.4 kg; 27.4 lb) nominal weight. However, its precise gold content is permitted to vary between 350 ozt (10.9 kg; 24.0 lb) and 430 ozt (13.4 kg; 29.5 lb). The minimum purity required is 99.5% gold.
Nuggets are usually 20.5 to 22 karat (k) purity, meaning they are 83% to 92% gold by mass. Gold nuggets in Australia are often 23 k or slightly higher, while Alaskan nuggets are usually at the lower end of the spectrum. Purity can be roughly assessed by nugget color: the richer and deeper the orange-yellow, the higher the gold content.
Aluminium ingot after ejection from mold Pouring molten gold into a mold at the La Luz Gold Mine in Siuna, Nicaragua, about 1959. An ingot is a piece of relatively pure material, usually metal, that is cast into a shape suitable for further processing. [1] In steelmaking, it is the first step among semi-finished casting products. Ingots usually ...
24-carat gold is pure (while 100% purity is very difficult to attain, 24-carat as a designation is permitted in commerce for a minimum of 99.95% purity), 18-carat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold), 12-carat gold is 12 parts gold (12 parts another metal), and so forth.
Precious metals (platinum, gold and silver) in the form of bars, ingots or plate, or in any context where weight is considered as a valuation. bullion coin Precious metals in the form of coins whose market value is determined by metallic content rather than scarcity. bullion value The current market value of the raw precious metal content of a ...
The design of the American Buffalo gold bullion coin is a modified version of James Earle Fraser's design for the Indian Head nickel (Type 1), issued in early 1913. After a raised mound of dirt below the animal on the reverse was reduced, the Type 2 variation continued to be minted for the rest of 1913 and every year until 1938, except for 1922, 1932, and 1933 when no nickels were struck.
White gold is an alloy of gold and at least one white metal (usually nickel, silver, platinum or palladium). [5] Like yellow gold, the purity of white gold is given in karats. White gold's properties vary depending on the metals used and their proportions. A common white gold formulation consists of 90% wt. gold and 10% wt. nickel. [4]
Sycees were first used as a medium for exchange as early as the Qin dynasty (3rd century BC). During the Western Han dynasty (206 BC – 9 AD), the Wu Zhu bronze coins became the main currency in circulation, while hoof-shaped gold ingot known as "Horse Hoof Gold" (Chinese: 馬蹄金) served as an adjunct currency for high-value transactions.