green gold
Noun
Meaning
a gold alloy (at least 14 karat gold with silver or silver and cadmium) that has a green appearance
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
Medals made before 1980 were struck in 23 carat gold, and later from 18 carat green gold plated with a 24 carat gold coating.
For several decades the medals awarded with the Nobel Prize have been made of gold-plated green gold.
It has also been produced artificially, and is often known as green gold.
Since then, they have been struck in 18 carat green gold plated with 24 carat gold.