Dental Gold Assay Process: 7 Essential Steps Dentists Should Know
A complete breakdown of how the dental gold assay process works — from collection and melt to chemical analysis and payment — so dentists and practices always know exactly what to expect.
🔬 The dental gold assay process converts dental scrap into a precise precious metal composition report
If your practice has been handing over bags of old crowns and bridges to a buyer without understanding what happens next, you're not alone — but you are leaving potential money on the table. The dental gold assay process is the only scientifically reliable method for determining what dental scrap is actually worth. Understanding each step of the dental gold assay process puts dentists in a far stronger position: you'll know what questions to ask, what red flags to spot, and why one buyer's offer can be dramatically higher than another's.
This guide walks through all 7 steps of the dental gold assay process in plain language — no chemistry degree required. Whether you're evaluating buyers for your practice or simply want to understand how your payout is calculated, these are the essential steps every dentist should know before shipping a single gram of dental scrap.
What Is the Dental Gold Assay Process and Why Does It Matter?
The dental gold assay process is the scientific procedure used to determine the precise composition of dental scrap — specifically, the percentage of each precious metal present in a batch of crowns, bridges, inlays, PFMs, and mixed scrap. The result of a proper dental gold assay is not an estimate or a visual guess. It is a measured chemical fact.
This matters enormously for dentists. Dental alloys are intentionally complex — engineered to be biocompatible, strong, and corrosion-resistant. A single batch of dental scrap from a practice might contain gold, platinum, palladium, silver, and various base metals, all in different proportions depending on when and where each restoration was fabricated. Without the dental gold assay process, no buyer can accurately determine what that mix is worth.
Buyers who skip the assay — pawn shops, general gold buyers, and some online services — estimate by appearance or by spot-checking a single piece. That approach almost always results in an undervalued offer, particularly for white or silver-colored restorations containing palladium or platinum. The dental gold assay process eliminates guesswork entirely and replaces it with chemistry.
Gold, platinum, and palladium spot prices — which directly determine your payout after the dental gold assay process — are published in real time by Kitco and the World Gold Council. Knowing today's spot prices before you ship helps you evaluate any offer you receive.
The Dental Gold Assay Process: All 7 Steps Explained
Every reputable dental gold buyer follows a consistent sequence. Here is exactly what happens to your material from the moment it arrives at the processing facility through to your final payment.
Your shipment is received, logged, and assigned a unique batch number. The sealed package is opened and its contents are recorded. Reputable buyers document this step — some with video — creating a chain of custody from the moment your material arrives. What to look for: your buyer should send you a confirmation that your package was received and opened.
The full batch is weighed to the nearest tenth of a gram on a calibrated scale. This gross weight is recorded before anything else happens. Why this matters: the gross weight sets the baseline for your entire payout calculation. Any discrepancy between what you shipped and what was weighed should be explained in your assay report. Standards for this step align with protocols maintained by the National Institute of Standards and Technology (NIST).
All material in the batch — crowns, bridges, PFMs, inlays, scrap, and any mixed pieces — is melted together in a crucible at temperatures exceeding 1,800°F. This step is critical: it converts a heterogeneous collection of different alloys into a single, uniform liquid. Why this matters: no meaningful chemical analysis can be performed on a mixed solid batch. The melt creates a homogeneous sample from which an accurate reading is possible. This is why the dental gold assay process always involves a melt, never a spot-test.
Once the material is fully molten and stirred to ensure uniform distribution, small samples are drawn from the melt. These samples — called "dip samples" or "pins" — are taken from multiple points to ensure they are representative of the whole batch. What dentists should know: a proper dental gold assay process uses multiple samples, not a single draw. A buyer who samples just once introduces potential error that may not favor you.
The samples are analyzed using one of two primary methods. Fire assay is the gold standard: the sample is treated with a flux, cupelled at high temperature, and the resulting bead is dissolved in acid to isolate each precious metal for individual weighing. XRF (X-ray fluorescence) is faster and non-destructive, using X-ray energy to identify elemental composition. Reputable buyers use fire assay for precision or XRF cross-referenced with fire assay to confirm results. The London Bullion Market Association (LBMA) sets the global standards that govern professional assay procedures.
With the precise composition now known — the exact percentage of gold, platinum, palladium, and silver in your batch — the buyer calculates the total precious metal content in troy ounces for each metal. Each metal is then multiplied by its current spot price. The sum of those calculations, minus the buyer's processing fee, is your offer. What your assay report should show: total gross weight, metal percentages, individual metal weights in troy ounces, spot prices used, and the final offer amount. If any of these are missing, ask for them.
You review the offer and the assay report. If you accept, payment is issued same-day or within 24 hours by check, ACH, or wire. If you have questions about the offer or want to discuss the figures, contact us directly.
The step I see skipped most often — even by buyers who claim to do a full dental gold assay process — is step four: multiple sampling of the melt. If someone draws one sample from the top of a crucible and calls it done, that's not a proper assay. Precious metals can stratify slightly during cooling, which means a single top-draw sample can be unrepresentative. At Dental Gold Experts, we use multiple draw points and cross-reference results. That's the only way to stand behind the number we give you.
Dental Gold Assay Process: What Metals Are Identified and Paid
One of the most important things dentists learn when they understand the dental gold assay process is that dental scrap almost never contains just gold. Modern and historical dental alloys are multi-metal by design. A professional dental gold assay identifies and pays on every precious metal present.
| Metal | Common Source in Dental Scrap | Paid in Assay? | 2026 Value Notes |
|---|---|---|---|
| Gold (Au) | Yellow crowns, bridges, inlays, high-noble alloys | Yes | Primary metal in most older restorations; 40–88% in high-noble alloys |
| Palladium (Pd) | White & silver crowns, PFM substructures, noble alloys | Yes | Has traded above gold per oz; never discard white metal without assay |
| Platinum (Pt) | Some PFMs, older high-noble alloys, white restorations | Yes | Lower presence than gold/palladium but commands a premium spot price |
| Silver (Ag) | Many alloy types as a minor component | Yes | Present in small percentages; adds modest incremental value |
| Nickel / Cobalt / Chromium | Base metal alloy crowns, some PFM substructures | No | No commodity spot price; separated and discarded during refining |
| Porcelain / Ceramic | PFM crowns, all-ceramic-over-metal restorations | No | Burns off or is removed during melt; does not affect precious metal content |
Current spot prices for all paid metals are published daily at Kitco. Your payout is calculated using spot prices on the day your assay is completed.
How the Dental Gold Assay Process Differs by Buyer Type
Not every buyer who claims to do a dental gold assay is doing it correctly — or at all. Understanding the difference between a true dental gold assay process and a visual estimate is the most important thing a dentist can know before choosing who to work with.
| Buyer Type | Full Melt? | Chemical Assay? | Written Report? | Transparent Process? |
|---|---|---|---|---|
| Specialist Mail-In Buyer | Yes | Yes | Yes | Yes |
| Regional Dental Refiner | Yes | Yes | Sometimes | Sometimes |
| General Online Gold Buyer | Sometimes | Sometimes | Sometimes | Sometimes |
| Local Jeweler / Gold Buyer | Rarely | Rarely | Rarely | Rarely |
| Pawn Shop | No | No | No | No |
Every dentist I talk to who switched from a local buyer to a specialist mail-in service reports the same thing: the first specialist check was noticeably higher than anything they'd received before — sometimes two or three times more. That gap almost always traces back to one thing: the local buyer wasn't doing a real dental gold assay process. They were eyeballing the material and offering a flat rate per gram based on assumed gold content. They never tested for palladium. They never tested for platinum. A proper dental gold assay catches all of it.
What a Dental Gold Assay Report Should Include
After the dental gold assay process is complete, a reputable buyer provides a written assay report. This document is your verification that the process was done correctly and that your offer is based on real data. The Dental Economics publication has noted that practices with a systematic approach to scrap recovery — including reviewing assay reports — consistently recover more revenue than those who treat it as an afterthought.
A complete dental gold assay report should include every one of the following:
- Batch ID and receipt date — your unique identifier for this shipment
- Gross weight of material received — in grams, to the nearest tenth
- Composition percentages — the exact percentage of gold, palladium, platinum, silver, and base metals found
- Precious metal weight in troy ounces — each metal broken out individually
- Spot prices used — the exact market price per troy ounce applied to each metal, dated to the day of processing
- Gross value calculation — showing the math from metal weight × spot price for each metal
- Processing fee or percentage — the buyer's charge, clearly itemized
- Net offer amount — what you will actually be paid
If a buyer cannot or will not provide all of these line items, you are not receiving a true dental gold assay. You are receiving an estimate — and estimates almost always favor the buyer, not the dentist.
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Dental Gold Experts completes a full melt-and-assay process on every batch and provides a complete written report. Free kit, fully insured, no minimum quantity.
Common Questions Dentists Have About the Dental Gold Assay Process
In over 15 years of working with dental professionals, the same questions come up again and again. Here are the ones that matter most when evaluating whether a buyer's dental gold assay process is legitimate.
Does mixing different alloys in one batch affect the assay?
No — and this is one of the key advantages of the melt step in the dental gold assay process. Because all materials are fully melted into a single homogeneous sample before analysis, different alloys are averaged into the overall composition. A batch can contain high-noble yellow crowns, palladium-heavy white bridges, and PFM scrap all together. The assay will capture the total precious metal content across all of it. You do not need to sort your material by alloy type before shipping.
Can porcelain on PFM crowns be sent as-is?
Yes. The porcelain in PFM crowns burns off entirely during the melt step of the dental gold assay process. It does not interfere with the metal analysis and you will not be penalized for it. Send PFM restorations exactly as they are — there is no need to remove the porcelain layer before shipping.
How do I know the weighed amount is accurate?
Reputable buyers use calibrated laboratory scales that meet measurement standards set by the National Institute of Standards and Technology (NIST). Your assay report will show the recorded gross weight. If you weighed your own material before shipping — which is a good practice — compare the two figures. A small variance is normal due to packaging; a large discrepancy should be questioned in writing.
Is the dental gold assay process the same for individual patients and dental practices?
Yes. The scientific steps of the dental gold assay process are identical whether you're submitting one crown from a patient or a full year of accumulated scrap from a multi-doctor practice. The only difference is batch size — which means practices with more volume simply see larger total payouts, not different procedures or rates.
"I'd been handing off our practice scrap to a local buyer for years without ever seeing an assay report. When I switched to Dental Gold Experts and got my first written breakdown — showing gold, palladium, and platinum percentages separately — I realized immediately why the check was so much larger. The dental gold assay process makes all the difference."Dr. Stephanie M. · General Dentist, Ohio
Dental Gold Assay Process: Red Flags That Should Stop You Cold
Not every buyer who mentions the word "assay" is actually performing one. Here are the warning signs that what's being offered is not a true dental gold assay process — and that you should look elsewhere before shipping anything.
- No written assay report. If a buyer can't produce a line-item breakdown after processing, they didn't do a real assay. A verbal offer or a single dollar figure without documentation is not a dental gold assay.
- Offer made before receiving your material. Any buyer who quotes you a price per gram before seeing or testing your actual batch is estimating, not assaying. The dental gold assay process cannot be completed without your material in hand.
- No transparency on declined offers. If a buyer cannot clearly explain what happens if you choose not to accept — or adds fees after the fact — treat that as a red flag and ask for clarification before shipping.
- Spot prices not disclosed. Your offer is calculated using spot prices for gold, palladium, and platinum. If a buyer won't tell you what spot prices they used, you cannot verify their math. This is a major red flag.
- Refuses to disclose processing fee percentage. Every buyer takes a margin. A transparent buyer discloses exactly what percentage they retain. Hidden fees or vague language like "we pay the best rates" with no specifics should be treated with skepticism.
Submit Your Dental Scrap for a True Assay-Based Evaluation
Dental Gold Experts provides a complete 7-step dental gold assay process on every batch — full melt, chemical analysis, written report, and same-day or 24-hour payment. Free kit, no minimum quantity, written report provided
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Dental Gold Experts — True Assay, Every Batch
Every shipment gets a full 7-step dental gold assay process, a written report, and a transparent offer. Fully insured mail-in. No minimums. Written report on every batch.