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If you’ve been adventuring through the vast world of ODIN: Valhalla Rising, you probably know how valuable Diamonds can be. Whether it’s for unlocking rare gear, refreshing stamina, or leveling up faster, Diamonds are a crucial part of progression. While most players stick to dailies or events to earn them, there are actually a few lesser-known quests hidden across Midgard and beyond that offer Diamond rewards — if you know where to look.

Here are 7 hidden quests that many players overlook, but are well worth completing if you’re looking to stack up on Diamonds without having to buy odin diamonds outright.

1. Forgotten Relic (Midgard – Westwood Ruins)

Triggered by interacting with a mossy statue deep inside the ruins, this quest tasks you with finding three broken relic fragments. It’s easy to miss since there’s no initial NPC marker. Completion grants 100 Diamonds and a rare accessory chest.

2. Whispers of the Sea (Jotunheim – Frostshore Docks)

After completing the main story in Jotunheim, talk to the old sailor near the edge of the dock. If you bring him a “Frozen Pearl” dropped by sea monsters, he’ll reveal a secret past mission. This short questline gives 150 Diamonds and a rare emote.

3. Cursed Grove Spirit (Alfheim – Everspring Hollow)

This quest begins only at night in-game. Look for a glowing willow tree and interact with it. A spirit will appear asking for a purifying flower that only grows in the high cliffs. Rewards include 80 Diamonds and a cosmetic title.

4. Trial of the Forgotten (Muspelheim – Ashen Cradle)

After completing all local bounties in this zone, an extra dungeon appears on the map. Completing it under 15 minutes triggers a hidden quest rewarding 120 Diamonds and exclusive dye for armor.

5. Letters Never Sent (Midgard – Capital Archives)

Search behind the bookshelf in the northwest corner of the Archives to find an old, unopened letter. A chain quest will follow where you track down the recipient’s descendants. It’s time-consuming but worth it for 200 Diamonds.

6. Watcher’s Regret (Svartalfheim – Mechanist’s Vault)

Interact with a malfunctioning watcher unit in the lower vaults. If you help repair it using rare machine parts, it opens a hidden vault. This quest offers a solid 100 Diamonds and several crafting materials.

7. Legacy of the Forgotten King (Vanaheim – Hollowed Summit)

This is perhaps the most rewarding. After defeating the field boss in this zone three times, return at sunrise and inspect the throne ruins. It triggers a quest with a lore-rich cutscene and a reward of 300 Diamonds.

Finding these quests may take some effort, but the payoff is worth it — especially for free-to-play players who want to maximize their resources without turning to real money too quickly. That said, sometimes you just need a boost. If you’re considering spending, many players look for cheap odin diamonds to keep up with guildmates or push content faster. Sites like U4GM are often mentioned in the community when players want to buy odin diamonds quickly and reliably.

But whether you're spending or grinding, don’t overlook the hidden gems in ODIN. These secret quests not only reward Diamonds but also immerse you deeper into the lore-rich world that makes the game stand out.