A quick question. got the ears! No.

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.

What happens when you use a Shriving stone?

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.