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:
“A woman with her two children was captured on the steps of the capitol building, whither she had fled for protection, and this, too, while the stars and stripes floated over it.”
—Jane Grey Swisshelm (1815–1884)
“Burning hot is the ground, liquid gold is the air;
Whoever looks round sees Eternity there.”
—John Clare (1793–1864)