Route 6 and Dragonspiral Tower.
To find it by the dust cloud then: Wellspring Cave, Chargestone Cave, Victory Road, Mistralton Cave, Twist Mountain, Challenger's Cave, and Giant Chasm.
You can find a Shiny Stone in route 6.
minccino
mincino
Togetic, Minccino, and roselia
At striaton city
You can evolve minnicino
route 1
My back yard
You need a Shiny Stone to evolve into Cinccino.
Minccino
route 1
Yes, you have to use a Shiny stone on it.