They act as unique Gold Mines, solely available on maps with Chinese terrain sets, such as Basin and Deep Jungle. Despite their unique appearance however, they function identically to Gold Mines. Any worker unit can mine Jade, although Dwarves are the game's most efficient miners. As with Gold Mines, there are small, medium and large Jade Mines, each providing a different amount of Gold; small ones provide 1500, medium ones provide 3000, and large Jade Mines provide 6000 Gold.