So since unique gems disguise in rituals, I think it would help the game economy by having them able to give potions.
For example, say you have 2 red gems, you ritual those with a unique gem, and the unique gems disguises as a red gem and you get a potion at completion.
It would make players more willing to ritual unique gems, and also give those players an extra layer of disguise. (No one expects a unique gem to be the same color as the other two).
The major drawback I could see are that people would rush the ritual for a free potion, but since potions cost 7 orbs, thats a waste, and they would have just rushed it with 3 red gems anyway.
This would promote unique gems being ritual, give people a better incentive for unique gems (Get any potion with them), and make unique gems (somewhat) harder to find.