Tobacco is known as The Golden Weed. Although, now, marijuana could take its' place.
Cotton
Jute
Platinum is the the metal known as white gold.
Shrimp is known as white gold in Bangladesh.
Cotton is known as 'white gold'. It is obviously not to be confused with the alloy of gold with such metals as nickel. The term has also been applied to salt.
It's not a crop but oil is called back gold.
The crash crop known as "Carolina's blue gold" refers to indigo. This plant was cultivated in the Carolinas during the 18th century for its deep blue dye, which was highly sought after in Europe for textile production. Indigo became a significant cash crop, contributing to the economic prosperity of the region before the American Revolution.
Cocaine
Saffron without a doubt
cocoa is called black gold because tha is how they named it
Rice
banana