Why Diamonds Matter
Diamonds are a valuable late-production item and a serious test of factory planning. Making them matters because a final Refiner is easy to place, but supplying it continuously requires a long, balanced chain of materials.
For most players, diamonds are a scaling project rather than an early rush item. Their value comes from both direct sales and possible jewelry use, while their difficulty comes from the massive volume of refining needed before Adamant reaches the final machine.
| Diamond detail | Value |
|---|---|
| Categories | Solid, Jewelry |
| Crafting device | Refiner |
| Direct recipe | 2 Adamant to 1 Diamond |
| Crafting time | 3 seconds |
| Output rate | 20 Diamonds per minute |
| Adamant needed | 40 per minute |
The direct recipe is straightforward: a Refiner converts two Adamant into one Diamond. The real challenge is every stage before it. If an earlier tier produces too slowly, the Diamond Refiner waits for material instead of producing at its listed rate.
Before committing to a large line, consider what you need most. Selling diamonds can provide income, but saving them for jewelry may better support the rest of your factory. The best use depends on your current shop demand, upgrade level, and available production space.
Diamond Production Routes
There are two main ways to approach diamonds: begin with sand and refine through the full chain, or buy Quartz Ore after it unlocks and enter later. A third option is processing recovered shards if your Cauldrons already provide them.
| Route | Starting point | Strength | Limitation |
|---|---|---|---|
| Sand route | Sand or stone processed into sand | Lower raw-material cost | Huge device and belt requirement |
| Quartz Ore route | Purchased Quartz Ore | Skips early refining stages | Requires level 7 and cash |
| Recovered shards | Cauldron byproducts | Can reduce input purchases | Depends on another production line |
The sand route becomes difficult because material passes through many repeated refining steps. Several intermediate versions are simply called refined sand, with no clear visual distinction between them. The final named stage is Fully Refined Sand, but it must still be refined further before the chain reaches diamonds.
Use the route that matches your factory’s current constraint:
- Choose Quartz Ore when space, construction effort, or setup time matters more than the smallest possible material cost.
- Choose sand when you have abundant room, strong logistics, and want to build a long-term high-volume line.
- Use recovered shards when they are a dependable output of an existing Cauldron setup.
- Do not judge the sand route by raw cost alone; belts, machines, and building materials are part of the price.
Quartz Ore unlocks at level 7 and refines into Crude Shard. Reference calculations put the Crude Shard cost from Quartz Ore at about 550 copper, while an equivalent sand-based route is about 512 copper. That difference is modest compared with the factory space and complexity Quartz Ore can avoid.
Building a Scalable Refinery Chain
A diamond line is much easier to manage when built as repeatable modules. Give each module a clear job, such as refining early sand stages or converting later shards. Once one section runs correctly, copy it beside or above the original instead of redesigning the whole line.
| Planning check | What to inspect | Result of getting it wrong |
|---|---|---|
| Input flow | Belts remain supplied | Final refiners idle |
| Machine ratios | Each tier feeds the next | One stage becomes a bottleneck |
| Conveyor speed | Belts carry required throughput | Machines stutter or starve |
| Layout access | Lifts and belts remain reachable | Repairs and expansion become difficult |
| Module shape | Sections tile cleanly | Scaling becomes unpredictable |
The important pattern is output reduction. A refinery example uses 45 items per minute to produce 22.5 items per minute. When this loss repeats through many stages, each later machine depends on a rapidly growing number of upstream devices.
A practical build process is:
- Test one small module before committing to a large blueprint.
- Keep repeated sand stages physically separated or labeled.
- Route raw materials on a dedicated trunk line rather than through finished-product belts.
- Add buffers where a short interruption would otherwise stop a later tier.
- Check belt speed before adding more machines to solve a slow output problem.
- Expand only after the current final-stage machine is consistently supplied.
Vertical construction can reduce ground footprint. Conveyor lifts, platforms, and stacked machinery allow modules to be placed above one another while preserving a repeatable layout. This is particularly useful for the early sand chain, where crushers, grinders, and many Refiners can dominate the build.
However, stacking does not eliminate logistics problems. Keep every layer oriented consistently, leave room to inspect belts, and avoid accidental connections between neighboring modules. A compact layout that is difficult to troubleshoot can cost more time than it saves.
Costs, Profit, and Output
Diamond profitability is not just a sale-price question. Account for raw materials, construction supplies, floor space, fuel or power demands, and the time needed to fill the whole chain. A cheap input route is less attractive if it cannot run reliably.
| Economic factor | Sand-focused production | Quartz Ore-focused production |
|---|---|---|
| Raw-material cost | Slightly lower | Slightly higher |
| Machine count | Extremely high | Lower |
| Factory footprint | Very large | More manageable |
| Time to first output | Long | Shorter |
| Expansion effort | Complex | Simpler |
Community reports indicate that Quartz Ore diamonds can be profitable, especially after improving sales-related upgrades. Exact margins vary with progression and shop bonuses, so use reported profits as a guide rather than a guarantee for every save.
Sales Ability increases shop profit, which can change the economics of a purchased-input route. A line that feels marginal now may become worthwhile later without rebuilding it. This is one reason to create modular layouts: you can increase capacity when upgrades make the output more rewarding.
Copper is the base currency. One silver equals 1,000 copper, and one gold equals 100,000 copper. Keep enough cash available to buy inputs while the chain is filling; a line that stops halfway leaves resources tied up in unfinished material.
Daily quests can also improve returns over ordinary shop sales. Random quests pay 130% of market value, bulk quests pay 160%, and urgent quests pay 200%. Keeping some finished stock available can let you take advantage of better orders instead of selling every diamond immediately.
FAQ
How do I make alchemy factory diamonds?
Use a Refiner to turn 2 Adamant into 1 Diamond. The recipe takes 3 seconds, but the difficult part is maintaining enough Adamant from the earlier refining stages.
Is Quartz Ore better than refining sand?
Quartz Ore is usually the practical option because it enters the chain at Crude Shard and avoids much of the early refining work. Sand can cost slightly less in raw materials, but it requires far more machines, belts, and space.
How much sand does one Diamond require?
One reference calculation estimates that the full sand route needs 16,384 sand for one Diamond. The exact build also requires extensive crusher, grinder, Refiner, and conveyor support.
Why is my Diamond Refiner slow?
Start by checking its Adamant belt, then trace the chain backward. Empty inputs, insufficient upstream capacity, slow conveyors, or poorly balanced machine ratios can all reduce output.
Should I sell Diamonds immediately?
Sell them when cash is needed, but compare ordinary shop sales with quest rewards and any planned jewelry production. Higher sales upgrades can also make direct diamond sales more appealing later.