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:
“Few colors last; with their eternal thirst, time and light suck on them, and they bleach the black doctors hat until its grey like a dunces cap.”
—Franz Grillparzer (17911872)
“The idols have seen lots of poverty,
Snakes and gold and lice,
But not the truth....”
—Wallace Stevens (18791955)