Artificial intelligence | Digital Gemology

A cutting file is only worth buying if every angle in it is right. That would mean nothing if the geometry came out of a model that guesses. So the most useful thing this notice can tell you is where artificial intelligence is not involved, and then be straight about where it is.

No geometry and no measurement is generated by AI

Every 3D model, every cutting file and every measured figure we sell or publish is built by deterministic geometry and physics. Facets are constructed from stated angles and indices, the models are exported from that construction, and light is traced through the result according to the optics of the material. There is no neural network, no training data, and nothing learned from other people's designs.

The practical consequence is reproducibility. Load one of our GemCad files into your own software and you will find the same angles we published. Trace the same cut, at the same refractive index, under the same protocol, and you get the same numbers today, next year and on your machine rather than ours.

If you ever find a figure or an angle from us that you cannot reproduce from the file and the stated method, treat it as an error and tell us.

Where we do use AI

We are a small company, and like most small companies we use general-purpose AI tools as assistants. Being specific about that is more useful than a vague reassurance.

Written copyDrafting and editing assistance for product descriptions, articles and course text. A person decides what is published and is answerable for it.

Course productionHelp with outlines, captions, transcripts and editing. The teaching, the examples and the technical content are checked by a person before release.

Marketing imagerySome campaign visuals may be AI-generated or AI-assisted. These are labelled. See the rule below on product previews.

Internal workResearch, code assistance and document drafting, including parts of these notices.

What AI is never used for:

Producing, adjusting, smoothing or estimating any facet, angle, file or published measurement.
Grading course work or deciding whether someone passes.
Making any decision about a person: who we sell to, at what price, or on what terms.
Answering you while pretending to be a human being.

How we label what AI makes

The EU AI Act requires people to be told when content is artificially generated. We think the honest version of that rule goes a little further than the letter of it, so:

A product preview always shows the file you are buying. Previews are renders of the actual geometry in the download, never a generated impression of it.
Renders are labelled as renders. They are computed images of a modelled stone, which is neither photography nor AI.
AI-generated or AI-assisted imagery is labelled as such where it could otherwise be mistaken for a photograph or a render.
We publish no synthetic imagery or audio of a real person. If a course lesson uses a synthetic voice, the lesson says so.
If we ever put a chatbot on the site or in the course, it will say it is a machine on first contact.

Our position under the AI Act

Regulation (EU) 2024/1689 sorts AI systems by risk. Ours is the simple end of it.

Prohibited practicesWe operate none of them. No social scoring, no emotion recognition, no biometric categorisation, no untargeted scraping of faces, no manipulation of vulnerable people.

High-risk systemsNone. In particular we do not use AI to admit students, to assess them or to steer their learning, which is where education becomes high-risk under the Act.

Transparency obligationsThese apply to us as a user of generative tools, and are what the labelling rules above are for.

General-purpose AI modelsWe build none. We use third-party tools as a customer.

We are a deployer of AI, not a provider of it. We are not required to register anything, and we make sure that whoever uses these tools here understands what they can and cannot do, because a tool used without understanding is where the harm actually comes from.

A person is always accountable

Nothing reaches you because software produced it. Every file, lesson, sentence and figure passes a human who is answerable for it, and "the model wrote it" is not an excuse we will ever offer you. If something we published is wrong, it is wrong because we published it.

Your files, your data and AI

We do not put customer personal data into public AI tools, and we do not use your data, or anything you make with our files, to train models, ours or anyone else's. How we handle personal data generally is in the privacy policy.

Telling us we got it wrong

If you believe something we published was AI-generated and not labelled, or that a figure cannot be reproduced, write to [email protected]. We would rather correct it than defend it.

What is changing

The AI Act arrives in stages. The prohibitions on unacceptable practices have applied since February 2025, the rules for general-purpose AI models since August 2025, and the transparency rules and the enforcement regime from 2 August 2026. Obligations for high-risk systems follow on 2 December 2027. Nothing we operate falls into the high-risk tier, and we will update this notice if that changes.

This notice describes our own practice and is published for transparency. It is not legal advice. Related: Intellectual property sets out what AI assistants may read and cite from our public pages, and why the paid files are excluded.