545 bytes added,
21:10, 19 August 2010 ''A dark green, blue and black opal.''
'''Opal''' is a precious [[Gems|gem]] that can appear on the ground after a [[mining]] action.
Depending on its [[quality]], it can be worth quite a bit to a [[trader]].
Maximum quality of the gem depends on the quality of the tile or your mining skill, whichever is lower.
[[Priest]]s can cast [[Vessel]] on gems to store [[favor]] for later use.
The amount of favor stored depends on the quality of the gem and the [[faith]] of the priest.
[[Category:Items]][[Category:Mining]]
[[Category:Babel/O]]