Grey gold alloys are made by adding silver, manganese and copper in specific ratios to the gold.
Read more about this topic: Red Gold
Famous quotes containing the words grey and/or gold:
“Each had his past shut in him like the leaves of a book known to him by heart; and his friends could only read the title, James Spalding, or Charles Budgeon, and the passengers going the opposite way could read nothing at all—save “a man with a red moustache,” “a young man in grey smoking a pipe.””
—Virginia Woolf (1882–1941)
“The fifth day of Christmas,
My true love sent to me
Five gold rings,”
—Unknown. The Twelve Days of Christmas (l. 19–21)