Do 당신 know about the ice covered rock on the route to Snowpoint city? If 당신 train eevee near there then 당신 get a glaceon. I did that on platinum and it worked I dont know about diamond thoughover a year ago
That's good to know, because I have Pearl, and I want my 2nd eevee, to evolve into a Glaceon, and my 1st eevee evolved into a Leafeon when I was in Eterna Forestover a year ago