Team Magma appears in many places, one of which is Dewford Island... outside the Museum.
You do not need and you cannot get the Magma Emblem in Pokemon Ruby. The Magma Emblem is a story item exclusive to Pokemon Emerald.
um...there is no Pokemon named magma...
You don't get the symbol in ruby.
Get the Goundon
Team Magma is absent in Pokemon sapphire, but exists in ruby. Same with team aqua in ruby version, both teams only coexist in Pokemon emerald version
U will need a water Pokemon like tenticrul
Team Magma Hideout
in a bush
Fiery Path.
Pokemon Emerald, Ruby, and Saphire.
Hassuboo,Yamirami,Habunake,Runatoon and Kayorga are Hoenn non-available in Ruby Pokémon: www.serebii.net
U go to the magma hideout and defeat Maxie