101Leafy researched the games.
Gravios Lance

Forged in a heat equal to a Black Gravios's heat beam. Next step in destructivity.
| Class | Lance |
|---|---|
| Rarity | 9 |
| Attack | 552 |
| Fire | 380 |
| Defense | +14 |
| Slots | 2 |
| Price | 95,000z |
Upgrades
| Upgraded from | Void Gravios Spear, Gravios Venom Spear |
|---|---|
| Upgrades into | Gravios Fire Lance |
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 748.