Stumbled upon the crystal Onix in a nuzlocke run : r/pokemon

Onix

9 Ways to Evolve Onix - wikiHow

POKÉMON FIRE RED COM ONIX - É POSSÍVEL? - DESAFIO POKÉMON #82

9 Formas de Evoluir Onix - wikiHow

Man got my first ever shiny while playing Pokemon fire Red nuzlocke 🌚 : r/nuzlocke

Released - Pokémon Rock Hard

Another funny run withnot so good pokemon except onix, he was terrible. - 9GAG

Pokémon FireRed Nuzlocke Episode #9: Breaking The Pattern – Kyle's Korner

Doing my first ever nuzlocke on Fire Red, and think my luck just peaked. Brock's Onix just missed 4/6 Rock Tomb attempts to let my very type disadvantaged team pass through deathless

Pokemon 4095 Crystal Onix Pokedex: Evolution, Moves, Location, Stats