what are special exploration rewards?

[R210496643]

what are special exploration rewards as stated the pic? all i got is fragment, parchment, magic dust, exp n gold. is the special reward one of them?

[casseopeya]

I think it's better for you not to spend diamonds on that, it's very little resources you get from it.

[MaiyaIris]

Special rewards refer to a bit greater amounts of parchments and magic dust than the usual outcome but as casseopeya said above do not waste your diamonds for this, it isn't worthy.