Here's what I found on the bukkit api: http://jd.bukkit.org/apidocs/org/bukkit/GameMode.html

I think it'd be a great feature to allow Precious stones to modify a player's gamemode type.

An example: A 20x20x20 stone field could be placed, and when a player enters it, their gamemode will be automatically changed to whatever is set in that stone's settings (IE Creative zone or survival zone). I think this would be a really beneficial feature as it means there would be much less arguments about players being in creative in survival areas (Which has caused a few arguments on my server).

Maybe one thing I'd be aware of is when a creative player flies into a survival field. If they are up high, their ankles will go smoosh and that's not so good. :( maybe nullify fall damage for that brief interval like the sky cannons?

Eitherway, good luck with coding. I think PreciousStones is a great mod!

Good stuff, looking into it.

ps. thanks:)

Added to next version

Absolutely brilliant, thanks a lot!