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:
“The good grey guardians of art
Patrol the halls on spongy shoes,
Impartially protective, though
Perhaps suspicious of Toulouse.”
—Richard Wilbur (b. 1921)
“He said there was gold here. He lied. He is not perfect.”
—Robert Bolt (1924–1995)
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