With the level cap being raised, adventurers will reach their hands to new equipment. Since those new tools of power require stronger jewels, our craftsmen have worked day and night to exchange the old magical jewels with new ones:
You can find them as usual in the Item-, Ruby (perfect jewels) and Phirius coin shop.
"This item increases the power level of an armor, asseccory and weapon piece to +1 (100%). If the armor piece's power level is already +1 or higher, there is a chance to increase its power level by 1 level. For character level 1-60. Increases the power level of a level 1-60 armor piece up to +6. If the upgrade process fails, the armor piece will remain at least at power level 1."