Grace is favour given without regard to merit—a gift that is unearned and transaction-free. This favour is bestowed based on the nature of the giver and the pre-existing relationship between the giver and the receiver.
Grace is not an object, it is the nature/character of the one who is extending the gift in order that the one being given to might receive it.
If grace is an object, then it becomes the thing that saves, and not Christ.