You get a shiny diglett by going into the cave where he is and getting lucky; your odds of finding a shiny Pokemon are 8/65539 or 1/8192 simplified. You could also try hatching a shiny diglett by breeding two digletts or breed a ditto with a diglett but still the odds are high you are going to have to get a lot of luck. You might also have to make tons of encounters with it; 10,000 or sometimes 30,000, but it all depends on luck. Goodluck on finding him and also even if you encounter it a lot like 8192 your odds never increase.
Lv 26
the shiny Pokemon code for AR 1b3jt59xr438
You have to be VEEEEEEERY patient - the chance of a Pokemon being shiny is 1/8192
im very very sorry but you can't unless you trade from firered/leafgreen
I will tell you if you give me a shiny Pokemon
Diglett cave
Diglett is not in sapphire trade with firered or leafgreen to get one.
Lv 26
Trade a diglett from firered or leafgreen to sapphire.
You'll have to trade from Pokemon FireRed or LeafGreen.
you can get a shiny Eevee on Pokemon leafgreen but its rare. its about a 1/5000 to get it
yes
Diglett evolves into Dugtrio at Level 26.
In Pokemon FireRed and LeafGreen, Diglett can learn Dig at level 17, which is a nice and early level for a good move.
the shiny Pokemon code for AR 1b3jt59xr438
Cheatcodes or luck.
no u cant