This item can increase the power level of weapons with a power level of at least +6 by +1. This improvement is 100% reliable up to power level +7 after which there is a chance that the upgrade process will fail, causing the power level to drop. However, the weapon will remain at least at power level +7. The highest level which can be achieved is power level +12.
The character level requirement of the weapon must not exceed level 100.
This item has a higher success rate than a Star Jewel - Class VIII