Spirit Vessel gets 5 sockets by using a Perfect Jeweller’s Orb on the gem. That raises a 4-socket skill gem to 5 sockets, and recent PoE2 guides specifically note this for Spirit Vessel / similar meta gems.

What to do

  1. Get Spirit Vessel to 4 sockets first.
  2. Use a Perfect Jeweller’s Orb on it.
  3. If it’s already corrupted, you generally can’t add more sockets the usual way afterward.

If that fails

  • A Vaal Orb can sometimes add a socket as a gamble, but it’s not reliable and works as a workaround rather than the standard route.
  • Some players confuse support sockets with Spirit reservation ; the sockets are for linked skill/support setup, not for changing the gem’s spirit cost directly.

Practical note

A forum thread from June 2026 shows players still asking about this exact item, which lines up with the current answer: the clean path is to use the highest-tier Jeweller’s Orb, not a vendor trick or crafting recipe.

TL;DR: get Spirit Vessel to 4 sockets, then use a Perfect Jeweller’s Orb to make it 5.