Use. Unlike other material gems, the Shriving Stone is used to undo the effects of a previously infused weapon, while retaining any reinforcements made from titanite.

Do you get the gem back when you use a Shriving stone?

The previous infused gem is also lost in the process, but the titanite reinforcement level is unaltered.

Can you reverse infusion ds3?

You can use a Shriving Stone if you wish to remove the Infusion from your Weapon or Shield (this must also be done at Blacksmith Andre).