I'm positive you can buy one from the battle dome in olivine and win it at the bug catching contest in the national park hope my answer is satisfying:D
It's super easy! Just enter the Bug-Catching-Contest in the National Park, win, and you get the Sun Stone!
Hope this helps!
Hope this helps!
I don't know but I want to find out because I have a Gloom LV 32 but my best pokemon is LV 78.
You can only buy it from using points at the battle dome in olivine city it should cost around about 3000P
Hope this helps >_< !!!
Hope this helps >_< !!!