Upgrading Prudentium to Tertium Crystal

Confirm Your Inputs

You need a Prudentium Crystal as the core input. This is the tier immediately below Tertium Crystal, so the upgrade consumes the Prudentium item. Do not lose it in a chest — keep it in your inventory before you start.

Craft the Tertium Crystal

Use a crafting table. The Tertium Crystal is produced by a crafting_shaped recipe, so the layout of ingredients in the 3x3 grid is fixed. Place the Prudentium Crystal and the remaining required items in the exact pattern. If the result slot stays empty, your arrangement is wrong — clear the grid and rebuild it from scratch rather than nudging single items.

When the pattern is correct, take the Tertium Crystal from the output.

Continue the Ladder

Tertium Crystal sits in the middle of the progression. Below it: Inferium Crystal, then Prudentium Crystal. Above it: Imperium Crystal, then Supremium Crystal. Each step is another shaped craft that consumes the previous tier. Plan your materials so you can chain Prudentium Crystal into Tertium Crystal into Imperium Crystal without stopping. Crafting multiple Tertium Crystals in one session saves trips if you intend to push toward the top tier.