Semi perfect: Gem with a rating of 999,999
Perfect: Gem with a rating of 2,999,997 (3 semi perfects)
Imperfect: Gem with rating between 1,000,000 - 2,999,996 (Any gem between a semi perfect and a perfect)
Sotherogue: the greatest ever
To answer questions, they are made by combing gems to reach 999,999 with totem bonuses. Three of those are made into a semi perfect. You can't just keep combining, because once a gem is greater than 999,999, you can no longer put it in the totem, thus meaning a perfect gem is the max, after the vault was introduced.
Well, you aren't allowed to sell accounts. So can't really help.
And since when, from the beginning of time, has something being illegal stopped people from doing it?
@OP, to save backup on iOS, it's already saved you're good. Deleting the app will still allow you to get the account back