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Pinchbeck (alloy) : ウィキペディア英語版 | Pinchbeck (alloy) "Pinchbeck" is a form of brass, an alloy of copper and zinc, mixed in proportions so that it closely resembles gold in appearance. It was invented in the 18th century by Christopher Pinchbeck, a London clockmaker. Since gold was only sold in 18-carat quality at that time, the development of pinchbeck allowed ordinary people to buy gold 'effect' jewelry on a budget. The inventor allegedly made pinchbeck jewellery clearly labelled as such. Pinchbeck jewellery was used in places like stagecoaches where there was a risk of theft. Later dishonest jewellers passed pinchbeck off as gold; over the years it came to mean a cheap and tawdry imitation of gold. 〔(World Wide Words, Pinchbeck )〕 Pinchbeck typically comprises copper and zinc in ratios between 89% Cu, 11% Zn; and 93% Cu, 7% Zn. ==See also==
* Prince's metal
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pinchbeck (alloy)」の詳細全文を読む
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