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:
“Old, aching God, grey with endless care,
calmly piercing evil’s new disguises,
glad of good surprises, wiser than despair
Hail and Hosanna, old, aching God!”
—Brian Wren (b. 1936)
“I had very good dentures once. Some magnificent gold work. It’s the only form of jewelry a man can wear that women fully appreciate.”
—Graham Greene (1904–1991)