101Leafy researched the games.
Anti-Faint Jewel
Japanese name: 抗絶珠 (Monster Hunter Portable 2nd G official guidebook, Enterbrain, 2008, pp. 954–1045).
Decoration that raises the Faint Skill.
From the guide book
Jewels
Set a jewel in a weapon or armor slot and the jewel's skill points are added to that gear. When the armor's skill points alone do not activate a skill, jewels can make up the difference. Jewels are made by giving money and materials to the Blacksmith. Each jewel needs its own number of slots, so check how many before you make one.
Our translation of the Monster Hunter Portable 2nd G official guidebook (Enterbrain, 2008), p. 98.
| Rarity | 5 |
|---|---|
| Carry limit | 99 |
| Buy | 750z |
| Sell | 75z |