Diamonds are the progression currency in Storage Hunters: Open World, separate from cash and needed for the upgrades that speed up everything else you do. You spend them on shop upgrades, plot expansion, staff improvements, and Luck Drinks, so a steady diamond income shortens the whole grind.
Quick answer: Claim the Daily Reward at login, keep NPC quests active while you bid and sell, open Diamond Safes at the Locksmith, and claim Collection Book milestones and completed Achievements. Every method is free, and stacking them in one session earns far more than farming any single source.
What diamonds are used for
Because so many permanent improvements are locked behind diamonds, progressing without them is slow. Knowing where they go helps you decide how hard to farm them early.
| Use | What it does |
|---|---|
| Upgrades | Inventory space, selling space, advertising, tip jar, plot capacity, and more. |
| Staff | Shop Assistant improvements such as Negotiating and Walk Speed. |
| Plot expansion | Increases the size of your plot. |
| Luck Drinks | Bought at the Energy Cafe for an auction luck boost. |
All diamond sources, ranked by effort
The core methods all run in the background of normal play. The trick is to touch each one every session rather than grinding a single activity.
| Method | Speed | Best use |
|---|---|---|
| Daily Rewards | Slow, passive | Free diamonds just for logging in. |
| Diamond Safes | Fast bursts | Large, random payouts after unlocking. |
| NPC Quests | Medium | Extra diamonds while you already bid and sell. |
| Collection Book | Long-term | Milestone diamonds from discovering items. |
| Achievements | Medium | Progress goals you clear during normal play. |
| Customer Tips | Passive, capped | Random diamonds from sales, up to 65 per hour. |
| Basketball minigame | Situational | Random diamonds per made shot. |
Claim the Daily Reward first
The Daily Reward window pops up automatically when you log in, and you can reopen it from the gift box icon in the top-right corner. Rewards include Cash, Luck Drinks, high-rarity items, and diamonds. The cycle resets after 7 days, so logging in consistently keeps the payouts moving. The per-day diamond amount looks small, but skipping it throws away free currency, so claim it before you start bidding.
Complete NPC quests while you farm
Every area has at least one NPC handing out quests, and most tasks are completed simply by winning auctions and selling items. That means quest progress happens during a normal looting run instead of on top of it. Talk to the NPC, accept the quests that reward diamonds, and claim your Cash and diamonds when the objective is done.
Pick up quests before you start bidding so a single run also moves quest, collection, achievement, and net worth progress at the same time. An example payout is a quest turn-in that returns a Luck Drink, roughly $240, and about 25 diamonds in one claim.
Open Diamond Safes at the Locksmith
Diamond Safes are the best burst source in the game. You find them inside storage units as you win auctions, then take them to the Locksmith to crack them open for a random diamond payout. Before opening, you can send a safe to the Grading Store to change its Grade, which can raise or lower the diamonds inside. After you claim the diamonds, the safe can still be sold to recover its cost.
Some safe slots at the Locksmith are gated behind net worth. If a safe will not open, your account value is too low rather than the game being bugged. Higher slots list their requirement directly, for example a slot needing $10,000 net worth to unlock and another needing $50,000.
| Problem | Cause | Fix |
|---|---|---|
| Safe will not open | Net worth below the slot requirement | Win auctions and sell valuable items to raise net worth, then return. |
| Low diamond payout | Random reward roll | Keep opening future safes; consider grading first. |
| No safes to open | Not enough gameplay drops yet | Keep bidding across areas to find more safes. |
The strongest areas to farm Diamond Safes are Back Alley, Shipyard, and the Beach. Raising net worth while hunting for safes solves both problems at once, since higher value unlocks the gated slots you cannot reach yet.
Push Collection Book milestones
The Collection Book is a slower source, but it pays over time. As you discover new items from different zones, your completion percentage rises, and certain milestones let you claim diamonds. Rewards can also include Cash and a permanent Luck Boost, so it is worth clearing.
If diamonds are your only goal, prioritize the Farmyard, Shipyard, Lucky Beach, Cargo Ship, and Lost Items indexes. Rotate zones once your returns in one area feel weak, since farming a single spot slows your collection progress. Claim milestones as they unlock instead of sitting on them.
Claim completed Achievements
Achievements unlock in the background, so they are easy to forget. Open the trophy icon on the right side of the screen and claim anything ready. Each one rewards a random amount of diamonds.
There are 21 Achievements in the game. The fastest, highest-value ones are tied to Auctions Won, Time Played, and Net Worth, so focus on those first. If an Achievement is one or two actions from completion, finish it before switching tasks. Sample rewards include 15 diamonds for 100 Auctions Won, 10 diamonds for 10 Hours Played, and 15 diamonds for reaching $10,000 net worth.
Earn diamonds from customer tips
Every customer who buys an item in your shop has a chance to leave a random diamond tip. Rich and Celebrity customers tip more often, and you can raise the odds by investing in Tip Jar and Celebrity Customer upgrades.
Tips are capped at 65 diamonds per hour, so treat them as passive income rather than a main farm. The Mint mutation is guaranteed to give a diamond tip on sale, as long as you have not yet hit the hourly limit.
Play the Basketball minigame
The Basketball court sits across from the Back Alley area and gives another diamond source. Two NPCs in the middle of the court hand out the quests that unlock it.
- Quest 1 asks you to find 7 Basketball Rings, which drop from winning auctions in Back Alley.
- Quest 2 asks you to find 6 Basketballs, which drop from winning auctions in the Junkyard.
Once a Basketball is in your inventory, it becomes usable. Return to the court and shoot it into the basket to earn a random amount of diamonds for every successful shot.
Fishing Season as a timed bonus
Fishing is only available during the Fishing Season event, which lasts about 12 minutes. You cannot catch fish reliably at any other time, so wait for the on-screen event message before starting.
Fishing rods break after several uses, so one rod is not enough to last the full window. Bring 3 to 4 rods before the event starts, then fish continuously until your rods break or the timer ends. Preparing rods early is the difference between using most of the window and losing it early.
The most efficient diamond loop
Stacking sources beats grinding one activity because each action feeds another system. Auctions raise net worth, net worth unlocks safe slots, new zones fill the Collection Book, and quests plus achievements pay diamonds on top. A tight session order keeps every action pointed at diamonds.
- Claim the Daily Reward at login.
- Pick up NPC quests before you start bidding.
- Open any Diamond Safes you can unlock at the Locksmith.
- Farm auctions and areas to build net worth and fill the Collection Book.
- Claim ready Collection Book milestones and completed Achievements.
- Join Fishing Season if it is active, with rods ready.
The common mistakes are the ones that quietly cost diamonds, so avoid them and the rest of the loop takes care of itself.
| Mistake | Fix |
|---|---|
| Skipping the Daily Reward | Claim it every login before anything else. |
| Ignoring NPC quests | Accept them before farming so runs earn double. |
| Opening safes before your net worth qualifies | Build value through auctions first, then return. |
| Farming one zone only | Rotate areas to keep collection progress moving. |
| Fishing outside the event | Wait for the Fishing Season message. |
| Entering Fishing Season with one rod | Bring 3 to 4 rods to cover the 12-minute window. |
Buying diamonds with Robux is always an option, but none of it is required. If you claim daily, keep quests active, open safes as your net worth grows, and clear milestones and achievements as they light up, your diamond balance climbs steadily while you play the game normally.
