ArtStation - The Crystal Onix

Pokemon Trainer and his Crystal Onix : r/Pokemonart

ArtStation - Crystal Onix

ArtStation - Crystal Onix

Crystal Onix Custom Art - Member Albums - Project Pokemon Forums

ArtStation - Noah Crowley

ArtStation - Onix

ArtStation - Backgrounds for the intro The Crystal Onyx

ArtStation - Aescermonium [green luminescent celestial snakepit], Thorns of the Aether // Psyberspace II

ArtStation - Crystal Onix

let's see if Crystal Onix would evolve into Crystal Steelix