Question 1

What is Neathiron used for in Diablo 4?

Accepted Answer

Neathiron rerolls the Capstone bonus on a Masterworked item. Once an item reaches Quality 25, one random affix is boosted by 50%, and each reroll at the Blacksmith costs 1 Neathiron, 1,000 Obducite and 1,000,000 Gold.

Question 2

Can Neathiron be traded, or do you farm it on my account?

Accepted Answer

We farm it on your account. Neathiron is account-bound and cannot be traded between players, so our team runs the drop sources on your character and the material lands in your materials tab. Self-play is available if you want to play alongside the team.

Question 3

Where does Neathiron drop in Season 15?

Accepted Answer

The most reliable sources are World Bosses, Bartuc in Infernal Hordes, Astaroth in Escalation Dungeons and Belial, Lord of Lies. Elites and Nightmare Dungeon bosses drop it only rarely.

Question 4

How long does a Neathiron boost take?

Accepted Answer

Our 24/7 manager confirms most orders within about 15 minutes. The farm time scales with the quantity you choose, since every piece comes from late-game bosses and activities, and the full amount is delivered when the run is done.

Question 5

How much Neathiron should I buy?

Accepted Answer

Each Capstone reroll uses 1 Neathiron, and the roll is random, so plan for several attempts per item you want to perfect. Remember that every reroll also costs 1,000 Obducite and 1,000,000 Gold. Message our 24/7 support with your gear goals and we will suggest a quantity.

Step	What happens
Reach Quality 25	Masterwork the item to the top Quality with Obducite and Gold.
Capstone bonus	One random affix on the item is boosted by 50%.
Reroll at the Blacksmith	Each attempt costs 1 Neathiron, 1,000 Obducite and 1,000,000 Gold.
Repeat	Materials are not refunded, so a reserve lets you keep rolling until the right affix is boosted.

Diablo 4 Neathiron Boost