Dispel Barrier

Except for Arcane disjunction, this spell is the only means of dispelling energy barriers and force barriers. The DC to dispel most barriers is 10, modified by the difference between your spell attack bonus and that of the creature who created the barrier. The DC to dispel a barrier created by Improved force barrier is 15, modified by the difference between your spell attack bonus and that of the creature that created the barrier. Due to the nature of the Dispel barrier spell, few wizards are willing to share it. 

This spell requires a large blue spinel (1,500 g.p.) to cast, which is consumed in the casting. 

At higher levels. When cast using a 7th level spell slot or higher, add two to the d20 roll when making the DC check for each slot level above 6th.