For bling .
Combined with the sapphire the ruby and sapphire will allow you to trade with ruby and sapphire and emerald.
on groudon
clafairy
Use Dive.
You don't. You have to trade an eevee to Pokemon Ruby to use one in the game.
u have 2 use a computer
Use a GameShark.
use the itemfinder
use a moonstone
EVEE
Yes.