SRD:Ring of Epic Protection

Protection
This ring offers continual magical protection in the form of a deflection bonus to Armor Class of +6 or higher.

Caster Level: 20th: Prerequisites: Forge Ring, Forge Epic Ring, shield of faith, creator’s caster level must be three times the ring’s bonus; Market Price: 720,000 gp (+6), 980,000 gp (+7), 1,280,000 gp (+8), 1,620,000 gp (+9), 2,000,000 gp (+10).