Empty Soul gems, whether looted or bought, have a value based on the grade of the gem, which does not change if filled later. Merchant gems sold or found filled with a soul have a value based on the level of the soul, regardless of the grade of gem.
There are a few ways to charge Soul Gems:
Soul gems come in various sizes. The bigger the gem, the greater the "soul" that can be stored in it:
- Petty Soul Gem
- Lesser Soul Gem
- Common Soul Gem
- Greater Soul Gem
- Grand Soul Gem
- Black Soul Gem
- Azura's Star
Black Soul GemEdit
All humanoid souls have a "grand" value, making the value of a humanoid soul equal to that of a a Gloom Wraith. Since the power level of an enchantment from Grand and Black Soul Gems are identical, this equality of soul value makes the creation of Black Soul Gems a basically unnecessary process once you start encountering more creatures possessing a Grand soul.
Black Soul Gems are created by placing a Grand Soul Gem in one of four necromancer altars in Cyrodiil, then casting Soul Trap on the altar at the appropriate time. They can also occasionally be found on necromancers.
Colossal Black Soul GemEdit
Unique soul gemsEdit
On the first floor of the Leyawiin Mages Guild resides a display case, containing uniquely sized and colored soul gems. The cabinet requires a key to open, but the key is nowhere to be found. Console commands can be used to unlock the case, but the gems cannot be added to the inventory or moved.
Trapping a SoulEdit
To use Soul Trap without having to cast the actual spell, it is possible to enchant a weapon with the Soul Trap spell for a one second duration. This second is sufficient in case the enchanted weapon is used to give the killing blow. If the weapon has a damaging enchantment of more than 1 second, the soul trap effect has to last longer. For example, a sword dealing five seconds of fire damage would need a soul trap effect of at least 6 seconds. An alternative method that can be used by spellcasters would be to create a spell that deals damage and to supplement this spell with a soul trap spell. Again, the soul trap duration would need to exceed that of the other spell by at least one second. Lastly, it is also possible to soul trap creatures that the player has conjured. Actively killing the creature is required however; simply letting the spell expire is not sufficient to trap the soul.
Another easy way to fill soul gems is to get a Black Soul Gem and duplicate it with a duplicate items glitch. If you have the Staff of Worms (dropped by Mannimarco during the Confront the King quest), go to one of the Bandit or Marauder camps around Cyrodiil. Kill all of the Bandits/Marauders except for one. Soul Trap this one, and kill it. Then, use the Staff of Worms to reanimate a dead bandit. Wait a few seconds, then Soul Trap it and kill it. It will count as a humanoid soul. Continue this process for as long as you like.
Locations in the Wizard's Tower plug-inEdit
An easy place to pick up soul gems are the vault guards in Frostcrag Spire if the Wizard's Tower plug-in is installed. All guards have a soul value of Greater and respawn in three in-game days.
This section contains bugs related to Soul Gem (Oblivion). Before adding a bug to this list, consider the following:
- There is a known bug in which all soul gems in a stack will be filled with the soul if a follower absorbs the soul of a creature through a weapon with the soul trap enchantment and has the appropriate soul gem in his or her inventory. Another likely bug can be used to clear higher grade soul gems that were accidentally filled with lower souls. Dropping soul gems that contain lesser or petty souls on the ground then picking them up will clear the sould but will not destroy the gem, thus making them available to be refilled.