Diamond powder pricing is not a number per kilogram. It is four costs stacked on top of each other, and a quote only makes sense when you know which ones moved. Understanding the structure is the difference between negotiating on the wrong line and asking the question that actually changes the price.
The Four Layers
The first layer is the raw material: the diamond crystal itself, either mined-grade synthetic or crushed from larger stock. Its cost tracks the crystal quality, and quality is not a constant. A tougher crystal costs more before it is ever processed.
The second is processing: crushing, grading, and any coating. Grading is the expensive step, because it converts one input into several outputs and the yield at your specific size band decides the cost. A narrow band in the fine end has a lower yield than a broad band in the middle, and that difference is real money.
The third is verification: the testing, the COA, the retained sample. On a technical grade this is not optional, and it is priced in.
The fourth is compliance and logistics: SDS, REACH documentation, packaging that survives an ocean container, and the paperwork that lets the shipment clear.
Why Small Quantities Cost More Per Kilo
Not because of markup. Because the fixed costs do not scale down. A grading run has a minimum chargeable quantity regardless of how much you buy. A coating batch needs a full charge of nickel solution. A test report costs the same for 5 kilograms as for 500.
This is the real origin of a minimum order quantity. It is not a policy invented to exclude small buyers; it is the point below which the fixed cost per kilogram starts rising faster than the material cost falls. When a supplier quotes a much lower MOQ than everyone else, the question is not how they did it, but what they left out of the batch.
Why Coated Grades Cost What They Cost
A nickel-coated grade adds two cost lines: the coating material itself, and the process time. A 56 percent coating carries more than twice the nickel of a 30 percent coating, and it also needs more process control, because a heavier deposit is harder to keep uniform.
Electroless deposition costs more than electroplating, because the chemistry is more expensive and the bath requires closer control. The reason to specify it is evenness, not price.
Lead Time Is Built, Not Waited For
A lead time is a sequence: raw material availability, production scheduling, grading, coating if required, testing, packing and documentation. Each stage has its own constraint, and the one that is currently overloaded sets the total.
Standard grades from stock move quickly. Coated grades need a coating batch, which is why our own product pages quote 7 to 10 working days for nickel and titanium coated material rather than immediate despatch. A custom size band or a custom coating weight adds a grading or a trial step on top.
When a supplier quotes a lead time, ask which stage drives it. The answer tells you whether a delay is predictable and whether there is any room to move.
The Questions That Change The Price
Does this price assume a standard size band, or a cut to my specification? The second is more expensive, and often unnecessary.
Is the coating weight the standard 30 or 56 percent, or a custom percentage? Custom coating is a separate setup.
Is the COA the standard set, or does it include morphology and mechanical data? The second is worth asking for on tool grades and usually worth paying for.
What is the smallest quantity you will run within a single batch? This question usually gets a more useful answer than “what is your MOQ”, because it addresses the reason behind the MOQ.
How To Compare Two Quotes
Put them side by side with five columns: grade, size band, coating, test set, and delivery term. If any column differs, the price difference is already explained and negotiation is a waste of time until the specifications match.
Once they match, the comparison is fair, and the remaining difference is either scale, efficiency or margin. Only one of those three is worth arguing about.
Next Step
To price a specific requirement, send the grade, size band, quantity and destination: request a quote. Standard grade ranges are on HDY and MBD.
Packaging and shipping detail: packaging for export orders. What to put in the enquiry: how to write a useful enquiry.