'''Gems''' are precious stones which sometimes appear in a player's inventory whilst on the ground when [[mining]] in caves, in which their quality is capped by your mining skill and/or tile quality. They can also be received as a gift from the gods when praying as a priest of over 50 [[faith]].
Gems can be either sold on to another player or a [[trader]], for varying amounts of money, or can be used by priests to "[[vessel]]" their [[favor]], saving it for later use. Gems never decay, although the vessel spell causes them to lose some quality each time it is cast.