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 face peered. All the grey night
In chaos of vacancy shone;
Naught but vast sorrow was there—
The sweet cheat gone.”
—Walter De La Mare (1873–1956)
“The award of a pure gold medal for poetry would flatter the recipient unduly: no poem ever attains such carat purity.”
—Robert Graves (1895–1985)