Short version: The most reliable farm is the Cultist Stronghold: clearing it opens a Diamond Chest worth 5 Diamonds (10 on x2 weekends). You also get 2 Diamonds at Day 50, 3 at Day 99, 1 from many chests, and Diamonds for every badge equal to its star rating.
Diamonds at a glance
| Stronghold | 5 Diamonds per clear, 10 on x2 weekends |
| Milestones | 2 at Day 50, 3 at Day 99 |
| Chests | 1 each: Common, Good, Iron, Ice, Cold, Gold, Legendary |
| Badges | Diamonds equal to the badge star rating, once per badge |
| Rate | About 15 per hour with a fast Stronghold clear (All Things How) |
| Source | All Things How, updated Nov 10, 2025 |
Cultist Stronghold
Clear the Stronghold to open its Diamond Chest. All Things How says to leave the server and rejoin to run it again, and recommends Brawler and Alien for quick clears.
Other ways
- Milestones: 2 Diamonds at Day 50 and 3 at Day 99 of a run.
- Chests: 1 Diamond each from seven chest types.
- Badges: each pays its star rating once. Our badges page lists them all.
- Update Party: about 20 to 40 Diamonds spawned by admins, only while the event is on.
- Codes: redeem in the Currency Shop. Current ones are on our codes page.
- Chat trick: type "yay fishing" while holding a fishing rod at the fishing minigame, once per account (from our codes page).
What to spend them on
Diamonds buy classes in the Daily Class Shop. See our classes and best classes pages before you spend.
Quick tips
- x2 weekends double the Stronghold chest.
- Badges are one-time, so go for high-star ones first.
- Ignore sites that sell Diamonds, they risk your account.
FAQ
What is the fastest way to get diamonds?
Repeating the Cultist Stronghold, about 15 Diamonds an hour with a fast clear per All Things How.
How many diamonds do you get at day 99?
3, and 2 at day 50.
Do codes give diamonds?
Often 2 to 15 Gems, see our codes page for the working ones.
More 99 Nights in the Forest pages
- 99 Nights in the Forest Classes
- Best Classes in 99 Nights in the Forest
- How to Get Bandages in 99 Nights in the Forest
- 99 Nights in the Forest codes
- 99 Nights in the Forest badges
- 99 Nights in the Forest wiki: live stats
Sources
Checked Nov 12, 2026. Community wikis are edited by players, so numbers marked “per” one wiki may change after an update.