Treatment disclosure is one of the most misunderstood topics in the carved stone trade, and one of the fastest ways to damage your business if you get it wrong.
This is not about whether treated stone is bad. Much of it is entirely legitimate and widely sold. The problem is undisclosed treatment — a customer buying something described as natural and discovering later that it is not.
What the terms mean
| Label | What it means |
|---|---|
| Natural | Natural rough stone with no treatment applied |
| Heat-treated | Colour changed by heating. Common and accepted in many materials when disclosed |
| Dyed | Artificial dye introduced to change or intensify colour |
| Irradiated | Colour changed by exposure to radiation |
| Stabilized | A binding agent introduced to strengthen a fragile material |
| Synthetic | Lab-created material, not mined |
| Glass / Resin | Manufactured materials entirely |
| Pending | Not yet verified — the honest answer when nobody has confirmed it |
Why "natural rough stone" is not the same as "untreated"
This distinction trips up a lot of buyers.
A piece can be carved from natural rough stone and still have been treated afterwards — heated, dyed, irradiated or stabilized. The origin of the material and the treatment applied to it are two separate facts.
So a supplier who says "our material is natural" has told you about origin, not treatment. Those are different questions and you need both answers.
Why this matters commercially
If you sell into the United States or Australia, your customers — particularly rock and mineral buyers — are well informed about treatment and care about it. The consequences of getting it wrong are practical, not theoretical:
- Returns and disputes. A customer who believes they bought untreated material and finds otherwise will want their money back.
- Review damage. In this category, a credibility problem spreads quickly.
- Retailer relationships. If you supply shops, you have passed the claim on. Their reputation absorbs it too.
- Advertising. Claims you cannot substantiate create problems that go well beyond a single listing.
The reverse is also true: honest disclosure is a selling point. A supplier who tells you plainly what something is, and says "I do not know yet" when they do not, is easier to build a business on than one who labels everything natural.
The disclosure test
When evaluating a supplier, ask these directly:
- What is the mineral or material, stated as a mineral name?
- Is it natural rough stone or manufactured?
- Has any treatment been applied — heat, dye, irradiation, stabilization?
- If it is a trade name, what is the actual material behind the name?
- Can you confirm this from supplier records for the specific lot I am buying?
- Which of your products can you not currently verify?
That last question is the most revealing. A supplier with a genuine disclosure practice will have an answer, because there will be items where documentation is incomplete. A supplier who claims everything is verified, in a trade where that is rarely true, is usually guessing.
About trade names
Many materials in this trade are sold under names that are not mineralogical classifications. This is not automatically dishonest — trade names are how the industry communicates — but you should know when you are dealing with one.
Examples of the pattern:
- A "jasper" trade name may refer to a material that is not, strictly, jasper.
- A colour-prefixed name may describe appearance rather than a distinct mineral.
- Some names are regional or historical rather than scientific.
If your retail customers include mineral collectors, presenting a trade name as a mineral name will eventually cause a problem.
How we handle it
We describe material, origin and treatment as separate fields, on the product page and in quotations.
Where we have not verified something, we mark it pending and confirm it from supplier records before you order — rather than defaulting it to "natural". At the time of writing, a portion of our range carries a trade name or treatment status we have not fully verified, and we say so publicly.
This costs us a little in the short term on pages where a competitor would simply write "natural". We think it is worth it, because the alternative is a customer finding out later.
You can read our full policy and the per-design status on the material disclosure page.
A practical rule
If you cannot get a straight answer about what a product is made of, that is itself the answer.
Ask us about the specific material you are considering and we will confirm it from supplier records before you order.