Grey gold alloys are made by adding silver, manganese and copper in specific ratios to the gold.
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Famous quotes containing the words grey and/or gold:
“We have not the slightest idea that women are made of such light material that the breath of any fool or knave may blow them on the rocks of ruin.”
—Jane Grey Swisshelm (1815–1884)
“An inch of gold can not buy an inch of time.”
—Chinese proverb.
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