Gold Dust Suppliers: Pricing, Purity Testing and Safe Export

Gold dust is one of the most traded – and most misunderstood – forms of raw gold. Because its purity varies and it is easy to misrepresent, choosing the right gold dust suppliers matters even more than with finished bars. The buyers who do well are the ones who understand how gold dust is tested, how it is priced, and what a safe, documented export looks like. This guide covers all three.

It is written from the perspective of a licensed operator that sources and exports gold from the DRC and Uganda. For the wider transaction fundamentals, start with our pillar guide on how to buy gold in Africa safely.

What gold dust actually is

Gold dust is fine, particulate gold – often alluvial gold recovered from riverbeds and sediment. Unlike a refined bar, raw gold dust has a variable purity that depends on its source, and it may contain other minerals and impurities. That is not a flaw; it is simply the nature of unrefined gold. The crucial implication for buyers is that the true value of any parcel of gold dust can only be established by assay, never by appearance or a seller’s verbal claim.

Why work with reputable gold dust suppliers

The variability of gold dust is exactly why supplier choice is so important. Reputable gold dust suppliers are registered, licensed operators who test before they sell, document the source, and export through legal channels. An informal seller offering “high-purity” dust with no assay and no paperwork is the classic profile of a risky deal. A credible supplier, by contrast, treats testing and documentation as the starting point of the conversation – not an inconvenience to be skipped.

How gold dust purity is tested

Because purity varies, assay testing is central to any gold dust transaction. Two methods are common:

• XRF (X-ray fluorescence) – a fast, non-destructive screening method that gives an indication of composition.
• Fire assay – the definitive reference method, used by refineries to confirm the actual gold content of a sample.

With raw gold dust, fire assay (or refinery acceptance testing) matters even more than with bars, because surface readings alone do not capture the true content of a mixed parcel. A serious supplier provides an assay report and supports independent verification before settlement. To understand how to read those results, see our guide on how to verify gold from an assay report, and learn about our Lab Testing service.

How gold dust is priced

Gold dust is priced on the basis of its assayed pure-gold content, not on the gross weight of the parcel. Because raw dust contains impurities, what matters is how much actual gold it yields once tested and refined. For this reason, a professional transaction is quoted per order in writing and settled on the weight and purity confirmed by assay at the buyer’s nominated refinery – so you pay for the gold you actually receive, verified independently. Be cautious of any seller who quotes a flat figure for “pure” dust without assay: with raw gold, the assay is the price basis. Request a written quote for your specific parcel rather than relying on generic numbers.

From gold dust to investment-grade gold

Raw gold dust is typically refined before it reaches investment use. Through smelting and refining, dust is turned into dore and then into refined bars, with purity established and certified along the way. Buyers who want a finished product can source refined gold in 22K, 23K and 24K (999.9) – most commonly 22K and 23K – while buyers equipped to refine may prefer raw dust or dore. Our Refining service covers this process from raw material to certified output.

Documentation and safe export of gold dust

Gold dust must move through the same legal, documented channels as any other gold. Because of current restrictions on direct gold exports from the DRC, established operators route consignments through Uganda (Entebbe) or Tanzania (Dar es Salaam), with the gold assayed, documented and exported under the relevant permits, then shipped insured and tracked – typically CIP (Incoterms 2020) – to the buyer’s destination. A compliant gold dust export should carry an assay report, certificate of origin, export permit, commercial/proforma invoice, insurance certificate and Air Waybill. For the full sequence, see our guide to the gold export procedure from the DRC.

How to order safely: a buyer checklist

• 1. Is the supplier a registered, licensed exporter with verifiable details?
• 2. Will you receive an assay report, and can you arrange independent testing before settlement?
• 3. Is pricing based on assayed pure-gold content and settled on refinery assay?
• 4. Is the export documented (certificate of origin, export permit) and the shipment insured and tracked?
• 5. Do you understand whether you are buying raw dust to refine, or sourcing refined gold instead?

Red flags with gold dust suppliers

• A purity claim with no assay report, or refusal of independent testing.
• A flat price for “pure” dust that ignores assayed content.
• No certificate of origin, export permit or insured logistics.
• An unverifiable seller with no company registration or named officers.
• Pressure to pay before testing, or to bypass documentation.

For the broader tactics to watch for, read our guide on how to spot common scams in gold trading.

How Congo Rare Minerals supplies gold dust and refined gold

Congo Rare Minerals (Reg. No. CD 893220) sources responsibly at origin in the DRC and Uganda with a documented chain of custody, conducts due diligence aligned with OECD guidance, and tests before sale. We can supply raw gold for buyers who refine, and refined gold in 22K, 23K and 24K (most commonly 22K and 23K) for those who want a finished product – in both cases with an assay report, certificate of origin and full export documentation, shipped insured and tracked and settled on refinery assay. You can review our operations on the About page and our sourcing on the Responsible Mining page.

Frequently asked questions

What purity is gold dust?

Raw gold dust has a variable purity that depends on its source and may contain impurities. The true gold content can only be established by assay, which is why testing is essential before any transaction.

How is gold dust priced?

Gold dust is priced on the basis of its assayed pure-gold content rather than gross weight, quoted per order in writing and settled on the weight and purity confirmed by assay at the buyer’s nominated refinery.

How do I verify gold dust before buying?

Request an assay report, and arrange independent or refinery testing before settlement. Fire assay or refinery acceptance testing is the most reliable confirmation for raw dust.

Can gold dust be exported legally?

Yes, through licensed exporters and documented channels. Because of restrictions on direct DRC export, dust is typically exported via Uganda or Tanzania with an assay report, certificate of origin, export permit, insurance and Air Waybill.

Can gold dust be refined into bars?

Yes. Gold dust is refined – through smelting and assay – into dore and then refined bars, available in 22K, 23K and 24K (999.9), with purity certified along the way.

Does Congo Rare Minerals sell gold dust to individuals?

We work with both individual and business buyers. The same testing, documentation and responsible-sourcing standards apply to every transaction, whether you buy raw gold or refined gold.