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Britannia silver, a higher grade silver alloy (95.8% compared to Sterling silver's 92.5%) Argentium sterling silver, a higher grade silver alloy with unique working properties (93.6% or 96%) Coin silver, .900 fine silver widely used in pre-1964 United States coinage; Pound sterling, the official currency of the United Kingdom, which once was ...
Hand-wrought Sterling Silver Earrings with Pearls, 1950s. Hatsue Higa Collection. Boyer was born in Portland, Oregon.He graduated from Bradley Polytechnic Institute in Peoria, Illinois, where he took courses in horology, engraving and jewelry design [1] [2] before moving to territorial Honolulu in 1940. [3]
Ninety-one (91) zolotniks have the equivalent millesimal fineness of 947[9]. Thus, the alloy contains 94.79% pure silver and 5.21% copper or other metals. [4] [5] Sterling silver has a millesimal fineness of 925. The sterling silver alloy is 92.5% pure silver and 7.5% copper or other metals.
"The words "silver" and "sterling silver" describe a product that contains 92.5% pure silver. Silver products sometimes may be marked 925, which means that 925 parts per thousand are pure silver. Some jewellery described as "silver plate" has a layer of silver applied to a base metal. "Coin silver" is used for compounds that contain 90% pure ...
In creating jewellery, gemstones, coins, or other precious items are often used, and they are typically set into precious metals. Platinum alloys range from 900 (90% pure) to 950 (95% pure). The silver used in jewellery is usually sterling silver, or 92.5% fine silver.
Argentium silver (patented in 1998) [1] is a brand of modern tarnish-resistant silver alloys, containing either 93.5%, 94% or 96% silver. Argentium alloys replace some of the copper in the traditional sterling silver (92.5% silver + 7.5% copper) with the metalloid germanium .