Server is opening soon!
I updated the OP with a few minor tweaks, such as a new photo, 11 to 12, and a link to download the gui.
Lilboarder updated the code with a few major things.
Here's the changelog:
GUI Updated
Gem Spawning improved
Gem management improved
Added automated help system
And to show off gem spawning, a grand 32x32 mined...

Shame your not seeing the floor :Y