Grey gold alloys are made by adding silver, manganese and copper in specific ratios to the gold.
Read more about this topic: Colored Gold
Famous quotes containing the words grey and/or gold:
“Towns are ... excrescences, grey fluxions, where men, hurrying to find one another, have lost themselves.”
—E.M. (Edward Morgan)
“John Brown of Ossawattamie
Who died to set Abstraction free
Stole Washington’s gold-handled sword
Less for the gold than for the Lord....”
—Allen Tate (1899–1979)