Increasing Stars for Curios

[Fury]

How does a curio go from 2 star to three star?

[jman]

It doesn't

[Skull]

This can be possible if u collect fragments or the same curio .
Ex:Brach . Brach Fragments(My opinion:This can be get from Elite mode)
Upgrading this curio from 3 to 4 stars can cost coins or gems.(Coins can be).
Completing stage can be avalaible only 3 tries/per day.(Elite Mode).

[jman]

You can go from fusion 2 to fusion 3, but you can't go from 2 star (rare) to 3 star (epic).