What has happened to Ruby Weapon?

[Peter_20]

Ultima weapon, not diamond weapon. Right? Oh yeah, mobiletype has it right. He will blow open part of cosmo canyon or something (have not played this since release). He makes a secret area that you can pull some sweet items out of, including the apocolypse (my favorite sword, by far).

Bipper

Yeah, but I wanna find Ruby Weapon right now.
I've already done *everything else* in the game, except for Emerald Weapon.