To enhance your items in Diablo 4 with Completion, you need Obsidian. Where you can best farm the crafting material for the endgame, you will find out here.
What do I need Obsidian for? In Diablo 4, you need Obsidian to enhance your equipment at the blacksmith with Completion. With Completion at the blacksmith, you improve the quality of your items. This increases the value of all affixes. How to unlock Completion and how it works specifically can be found in our overview.
Especially in the endgame, you virtually need heaps of Obsidian, as you are not only completing one set of equipment but probably several – depending on what you find. If you disassemble old, completed items, you will at least get some of the materials back.
The best farming spot for Obsidian
Where do I farm Obsidian the fastest? You gather Obsidian in all sorts of endgame activities. However, one of them is particularly worthwhile: Nightmare Dungeons with the affix “Horadric Vault.” While these chambers can only appear randomly in other dungeons, they are guaranteed with seals that have this specific affix.
In the Nightmare Dungeons, you enter the Vault through a portal and activate pillars to customize your passage. In the chambers, you have limited time to eliminate monsters and thereby increase your reward level.
Once time runs out or you reach the maximum level, the boss appears. After defeating the boss, a chest awaits you, which contains not only loot but also heaps of Obsidian.

Alternative farming spots for Obsidian
Besides the Horadric Vaults in Nightmare Dungeons, you can also obtain Obsidian in the following activities:
- Kurast Undercity
- Demon Hordes
- Nightmare Dungeons
- Mercenary Hideout (part of the expansion “Vessel of Hatred”)
In the Mercenary Hideout, you can exchange materials for “Pale Signs” with Fayira once a mercenary reaches level 5. To refill your account of Pale Signs and expand the offerings, you need to level your mercenaries. This happens automatically through rapport when they accompany you in battle.
Completion is an essential component in Diablo 4 to enhance your builds in the endgame and get the most out of them. Are you still looking for the best builds for the current season? Then with our current tier list, you have the best overview: Diablo 4 Season 11: Tier List with the best builds for all classes