Blast Jewel+ 4

MH World: IceborneDecoration
Slot size4
RarityRarity 11
SkillBlast Attack+2 levels

Skills

SkillLevelEffect
Blast Attack2Blast buildup +10% Bonus: +10

How to get it

FeystoneChance for a rarity 11 decoration
Carved Feystone37%
Sealed Feystone55%

Decorations come from Feystones (and Melding). The chance is for any decoration of this rarity; the exact jewel inside that rarity is then rolled.

Data: Monster Hunter World: Iceborne game files (final version 15.11).