Green
Tikal sealed herself in the master emerald with Chaos.
either the master emerald or a chaos emerald
It's the colour of emerald
Yes. The master emerald keeps the Island in the sky(known as Angle island, where knuckles live) afloat.
You can't get another master ball in emerald because there's no one will give you the master ball just the general will give you that.
From the store
action replay
master ball
No.
yes
In the master emerald
no