If I remember correctly, the Contest only gives you a Sun Stone until you beat the Elite Four. After that, it should give you all elemental stones randomly (I don't think it can award you an Everstone, though... I don't really remember...)
Viewing post in Needing a Dawn Stone
I have a couple questions about the Pokémon uncensored game if you'd be willing to help. Kinda stumped on a couple things in the game. I've beaten it but I'm collecting stuff now and I'm encountering stuff I can't seem to get through.
Battling sans in mallet town
Snorlax on Mt moon
Power plant commands