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:
“While on that old grey stone I sat
Under the old wind-broken tree,
I knew that One is animate,
Mankind inanimate phantasy.”
—William Butler Yeats (1865–1939)
“Holland is a dream, Monsieur, a dream of gold and smoke—smokier by day, more gilded by night. And night and day that dream is peopled with Lohengrins like these, dreamily riding their black bicycles with high handle-bars, funereal swans constantly drifting throughout the whole country, around the seas, along the canals.”
—Albert Camus (1913–1960)