Currently, I'm enchanting a Glass Bow (Exquisite) with Fire Damage. I have a Grand Soul Gem and a Petty Soul Gem available.
When selecting the Grand Soul Gem, the weapon has the following stats:
- Damage: 30
- Weight: 14
- Value: 1702
- Burns the target for 43 points. Targets on fire take extra damage.
When using the Petty Soul Gem, these are the stats:
- Damage: 30
- Weight: 14
- Value: 1372
- Burns the target for 43 points. Targets on fire take extra damage.
I've also noticed that the charge level of the weapon is just slightly less.
Since I plan on actually using this weapon, I really have a hard time seeing any worthwhile difference here. The only changes are:
- Value is lowered. (Not relevant to combat.)
- Weapon is slightly less charged. (Very small difference, and easily resolved by charging with another low-level gem.)
I could see using the higher gem perhaps if I wanted to go straight to market with this weapon. But other than that, is there really any point in using a higher-level gem to enchant weapons you actually plan on using?