First you need to go to One island and go into the Pokemon center and talk to celio after beating the elite four and getting the national dex he will ask you to get the ruby now to get it go to mt ember which is north of one island and enter the cave that is blocked by rockets next locate the ruby now to know you found the spot to the ruby there are 2 ways to go at a certain part you go down and you will find the ruby eventually, NOTE you need a Pokemon that knows strength.
In Icefall Cave, in Four Island
You must beat the seven gym leaders, the elite four, and your rival. Then you have to capture 60 Pokemon to get your Rainbow pass the will allow you to travel to Island 7 in Pokemon FireRed.
you getditto or a charizard and put them in the day care on four island
Take them to Four Island after beating the Elite 4. You leave your Pokemon with a Ditto in the daycare and they'll have an egg eventually.
There very common! You can find them in the icefall cave, four island and ruin valley! I am a jeenyus!
It is in Four island
island four or island five.
It's on four island.
It's in the Icefall Cave on Four Island.
its located on four island in the cave
In Icefall Cave, in Four Island
Four Island, Icefall Cave.
It is in Island four.
In icefall cave at four island.
In Icefall Cave, in Four Island
Only in firered and leafgreen can you venture to the sevii islands and four island.
You can find it at Icefall Cave at Four Island.