Jewel of Excellent

Adds one excellent option
to your already excellent item,
up to 2 options.

Jewel of Luck

Add + Luck to your item that has no Luck option.

Jewel of Level

Add Level to item from +9 to +13

Jewel of Super Level

Add Level to item from +13 to +15.
You can get this jewel by mixing 10 Jewel of Level in Chaos machine.
It's a 100% rate and costs 500kk Zen.