On their turn players can take Gem tokens (note: not gold!) from the stacks by either:
1) Take 3 gem tokens of different colors.
2) Take 2 gem tokens of the same color. This action is only possible if there are at least 4 tokens of the chosen color left when taking them.
A player can never have more than 10 tokens at the end of their turn (including gold (jokers). If this happens, they must return tokens until they only have 10 left. A player can return all or some of those they’ve just drawn. The gems on Developments don't count towards this number!
The tokens owned by a player must be visible by all players at all times.