Why stone trade names need a closer look

Keep names and evidence together.

The Natural Stone Institute distinguishes commercial groups from strict scientific definitions. A familiar sales name may be useful in a design conversation, but it does not replace the information for the actual material being supplied.

Record the supplier name, material description, source information and slab reference. If a substitute is proposed, ask what has changed rather than assuming a similar name establishes equivalence.

Ask what the name is being used to promise.

Separate colour and pattern from material properties. A name that suggests a place, a luxurious appearance or a popular colour does not by itself establish origin, composition or suitability. Ask for the information relevant to the intended use.

When technical properties matter, use product-specific documentation and the relevant project advice. Avoid transferring a value from a different stone because its photograph looks similar.

Build a small material record.

Keep the actual sample, finish description, slab photographs and approved layout together. Add disclosed treatments and care information. This is more useful for later decisions than a screenshot of a list of names.

For a multi-piece project, confirm how each delivered component is connected to the approved material record. Revisit the record if the source, slab or treatment changes.

Your checklist

Questions before the next step