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:
“Nature must change her plan
Ere you can be a man.”
—Jane Grey Swisshelm (1815–1884)
“In our daily intercourse with men, our nobler faculties are dormant and suffered to rust. None will pay us the compliment to expect nobleness from us. Though we have gold to give, they demand only copper.”
—Henry David Thoreau (1817–1862)