Is it intact?

The dagger that Michael possessed came from the Oak tree that can permanently kill an Original, do you think that while Michael was being killed by Klaus.. the dagger burned up along with Michael's body, so does the dagger have an expiration date?.. Like one dagger per original?

Michael's gone so is the dagger too or do you think its like the necklace...reusable and does not get destroyed by fire?... Cause if it doesn't than a weapon against Klaus is still intact.

Btw: Loving this Ripper Stefan. I like him in Revenge mode!!