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:
“There is grey in your hair.
Young men no longer suddenly catch their breath
When you are passing;
But maybe some old gaffer mutters a blessing
Because it was your prayer
Recovered him upon the bed of death.”
—William Butler Yeats (1865–1939)
“But tell me: how did gold get to be the highest value? Because it is uncommon and useless and gleaming and gentle in its brilliance; it always gives itself. Only as an image of the highest virtue did gold get to be the highest value. The giver’s glance gleams like gold. A golden brilliance concludes peace between the moon and the sun. Uncommon is the highest virtue and useless, it is gleaming and gentle in its brilliance: a gift- giving virtue is the highest virtue.”
—Friedrich Nietzsche (1844–1900)