Heroes I mine

The gem mine is a mine in the Heroes of Might and Magic games that gives the kingdom controlling it gems every day. The hero gains one gem each day they control the mine.

In Heroes I and Heroes II, it is called a gems mine on the adventure map, but is referred to as a gem mine when a hero visits it.

In Heroes III, the mine is referred to as a gem pond. Apart from the change in name and appearance, it functions identically.