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A-Mark Precious Metals (founded in 1965 as A Mark Coin Company) [1] is a precious metals trading company. It was the first company allowed to make and sell coins from the metals recovered in the shipwreck of SS Gairsoppa. [1] A-Mark is traded on Nasdaq and is a Fortune 500 company as of 2021. [3]
The campus serves as the headquarters of ASM International, formerly the American Society for Metals. The dome is the "world's largest open air geodesic dome", and is rare among Synergetics, Inc.-designed geodesic domes in that it was never intended to be a covered structure. [2]
A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of quality. Not to be confused with responsibility marks that are the marks of ...
Other precious metals include the platinum group metals: ruthenium, rhodium, palladium, osmium, iridium, and platinum, of which platinum is the most widely traded. [1] The demand for precious metals is driven not only by their practical use but also by their role as investments and a store of value. Historically, precious metals have commanded ...
Metal Supermarkets was established in 1985 as a single location in Mississauga by William H. Mair, who saw an untapped market in offering small quantities of metal, which many large metal suppliers could not satisfy. Therefore, Metal Supermarkets adopted a business model based on cut-to-size metals and no minimum order size. [5] [7]
[1] [2] However, both this and other routes of synthesis of precious metals via nuclear reactions is orders of magnitude removed from economic viability. Chlorine, sulfur and carbon (as coal) are cheapest by mass. Hydrogen, nitrogen, oxygen and chlorine are cheapest by volume at atmospheric pressure.
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.
The Unified Numbering System for Metals and Alloys (UNS) is an alloy designation system widely accepted in North America. Each UNS number relates to a specific metal or alloy and defines its specific chemical composition, or in some cases a specific mechanical or physical property. A UNS number alone does not constitute a full material ...