Describe it. See it in 3D. Compare real manufacturers.

Goldsmith is an AI design tool and a verified-manufacturer marketplace for custom jewelry. A buyer describes a piece in plain words, gets manufacturable 3D designs, orders 3D-printed try-on models, and requests comparable quotes from verified manufacturers on one design file. Payment is held until delivery.

Launch · Q4 2027

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See the product Case study ↗

Jewelry · Marketplace

Goldsmith

Describe it, see it in 3D, compare real manufacturers.

Goldsmith · From a sentence to a finished piece

Q4 2027: public launch for buyers, jewelers and makers
~1 s: to the first manufacturable design (target: 15 s)
98%+: of designs manufacturable after automatic fixes, across all five categories
24/24: adversarial prompts handled safely, from brand names to prompt injection

Measured on a 324-prompt synthetic test set run locally on 9 Nov 2026. Synthetic prompts show coverage, not how real buyers phrase things; a held-out set from buyer interviews comes next.

[ 01 ] // The problem

Custom jewelry is expensive
because of who stands in between

Jewelers hold the relationships with manufacturers and designers, and mark prices up to cover that, the store and the hours of consulting custom work takes.

Price

Custom work is marked up 200% to 500%, and the buyer sees only the final number.

Trust

Most people don’t buy custom jewelry often enough to know what a fair price looks like, so they overpay or give up.

Access

A small jeweler without a network of verified manufacturers, or without expensive hardware for 3D design, can’t compete on speed or choice.

[ 02 ] // The product

From a sentence
to a finished piece

Two parts that depend on each other: the design tool creates a design a manufacturer can quote on, and the marketplace turns it into a real piece at a price the buyer can compare.

Describe and generate

Plain words in, manufacturable 3D out

The buyer writes what they want. Goldsmith returns four to six candidates built from versioned, licensed parametric CAD templates, each checked against a manufacturing rule profile. The AI chooses and sizes the geometry; it never draws the solid itself.

Prong thickness, minimum wall and band width checked
Watertight meshes printers and casters accept

Design studio

Refine

Change the stone, the metal, the fit

The buyer iterates on a candidate, or a jeweler with the full tool edits by hand. Every change is a new version, so undo and restore walk the history instead of overwriting it.

Size, stone and metal stay in agreement
A fit checker for rings, chains and bracelets

Refine editor

Request quotes

Manufacturers compete on one file

The design goes to verified manufacturers through a request for quotation. Every quote is on the same immutable design file, so the buyer compares price, timeline and services like for like.

Compare quotes

Try on and order

Hold it before you buy it

The buyer receives 3D-printed models of their top candidates, picks a final design and expects the finished piece in about three weeks. Payment is held until delivery.

About three weeks is the plan’s expectation, not a measured time

Design detail for a sapphire solitaire pendant with measurements, manufacturing checks, chain-length fit checker and price across makers

Order progress

Order progress for a curb chain: milestones, messages from the maker and the ship window.

Jeweler workspace

Jeweler workspace: measure a rose gold cuff, check it is ready to make, queue renders and export.

Goldsmith storefront featuring a solid 14k gold lion head pendant with three maker quotes, a describe-it prompt, and chains, cuffs, rings and earrings — Storefront: a solid gold lion head pendant, quoted by three makers on the same design file.

[ 02b ] // Architecture

How Goldsmith
works

Architecture

[ 03 ] // How it works, step by step

From a sentence
to a checked solid

The AI chooses a template and its sizes. A CAD engine builds the solid and measures it. Nothing a buyer sees has skipped the second half.

Interpret

The description becomes a structured design: category, setting, metal, size and stones. The result is checked against a fixed format. If it fails twice, the buyer gets a clarifying question, not a guess. A named brand gets a design in that style, with a notice.

Resolve

Reference tables turn words into dimensions: ring size to inner diameter, carat to millimetres, alloy to density. If the text and the pickers disagree, such as 18k in the sentence and 14k in the picker, the buyer is told.

Generate

Four to six candidates come from licensed templates. Each differs from the others in at least one style choice, such as the setting, the shank, the gallery, the bail or the clasp.

Build

Each candidate is built as a real solid by an open-source CAD kernel, in a locked-down worker with no network access and a time limit. Only templates whose code matches the reviewed registry can run.

Check and fix

The engine measures the solid: wall thickness, band width, prongs, the stone seat, and whether the mesh is watertight. Where a setting can fix a failure, it is adjusted and the card says so. A candidate that can’t be made valid is never shown.

Export

A passing design exports as the files a workshop uses: STEP, true-size STL, a try-on STL with the stones as separate bodies, GLB and OBJ. The quote package adds the check report, the specification sheet and a hash of every file.

Two loops close the system. Failed checks send fixes back into the design before anyone sees it. Quotes and try-on results send the buyer back to refine, and every accepted change is a new version, so nothing a manufacturer quoted on is ever overwritten.

The template families cover five kinds of piece. Rings: prong solitaires with four, six or eight prongs, bezels, halos, three-stone rings and plain bands. Pendants: solitaire, halo, bar, disc and teardrop. Earrings, built as a mirrored pair: studs, hoops and drops. Bangles and cuffs. Stock chains for necklaces and chain bracelets.

[ 03b ] // How it is tested

The checks every design
has to pass

A design is checked against a manufacturing rule profile every time it changes. These are the platform’s starting values. Each manufacturer’s own limits replace them, and changing the manufacturer runs the checks again.

Rule	Starting value	Why it matters
Prong thickness	≥ 0.8 mm	Thin prongs bend or break when the stone is set.
Minimum wall	≥ 1.2 mm	Thin walls can fail in casting.
Band width	≥ 1.5 mm	Keeps the shank strong enough to resize.
Stone seat	= stone	The seat matches the stone’s diameter. A loose seat means a loose stone.
Mesh	Watertight	Printers and casters need a closed solid. There is no automatic fix: a design that fails is dropped.

17.3 mm: inner diameter of a US size 7 ring
6.5 mm: diameter of a 1.00 carat round brilliant
58.3%: gold content of 14k. 18k is 75.0%
±10%: band on the metal weight, which is always labelled an estimate

Standard industry reference values, kept in versioned tables so the design, the stone and the size always agree.

What the evaluation measures. The 324 test prompts run through the whole chain, from interpreting the words to the engine’s own measurements. The report covers whether each design is valid, whether it matches what was asked for, how many candidates came back and how different they are, how many pass the rules after automatic fixes, and how long it took.

What the 24 adversarial prompts are. Unsupported pieces, brand names, a metal named two ways, contact details, prompt injection, empty text, over-long text, nonsense and abusive engraving. A description longer than 1,000 characters is refused, never silently cut. Only the description is sent for interpretation, with email addresses, phone numbers and links masked.

What the engine was swept on. Two sweeps of 1,296 and 840 ring combinations were built to test the geometry itself. Every buildable design came out as one valid solid, with nothing intruding into the finger hole.

[ 04 ] // Results so far

Fast, manufacturable
and safe by default

The baseline every later build is gated against: a drop of more than two points in any category blocks the release.

Category	Prompts	Manufacturable after fix	First design (median)	All candidates (95th pct.)
Rings	120	98.8%	0.8 s	5.2 s
Pendants	50	98.4%	0.9 s	4.9 s
Earrings	50	100%	1.0 s	4.8 s
Necklaces	40	100%	0.1 s	4.3 s
Bracelets	40	100%	0.1 s	4.2 s

Synthetic 324-prompt golden set (including 24 adversarial prompts, all handled), run locally on 9 Nov 2026. Targets from the specification: first design within 15 s, all candidates within 60 s. Known gap: only half of necklace prompts get four to six candidates today.

[ 04c ] // What makes it different

Six decisions,
and what was turned down

Templates, not free-form shapes

Every design is built from a parametric template with known ranges, so it can be measured, fixed and rebuilt exactly.

Not chosen: Generating a free-form 3D mesh from text, which can’t be measured against a template’s known limits.

Open-source CAD underneath

Goldsmith is built on open-source design software, with the AI on top of it, so the effort goes into the product and not into writing a modeler.

Not chosen: Licensing or building a proprietary modeler.

Nothing built from someone else’s design

Every template is written, commissioned or licensed in writing, and each carries a record of where it came from. A jeweler’s catalog is their livelihood.

Not chosen: Training on scraped catalogs because it would have been faster.

Check as you design

Reference data and rule checks catch problems before a manufacturer sees the file, on every edit and not only at the end.

Trade-off: Some designs a buyer asks for are adjusted or refused, and the buyer is told why.

Verify before they bid

Verification is what makes a buyer willing to compare offers from strangers.

Not chosen: An open marketplace where anyone can list: easier to grow, harder to trust.

Let the buyer hold it first

A 3D-printed model lets a buyer judge scale and fit, and makes the wait easier to accept because they have already seen the thing.

Not chosen: Renders only, which are cheaper and don’t answer whether the buyer will commit.

[ Au ] // The gold standard, here

How Goldsmith meets the Aurifex standard

Every Aurifex product must solve a real problem, be proven before it ships, and be effortless to use. Here is what that means for Goldsmith.

Real problem

Custom jewelry is marked up 200% to 500%, buyers can’t tell a fair price, and small jewelers lack the tools to compete.

Proven

Every design is checked against a manufacturing rule profile before it can be quoted; 98%+ pass after automatic fixes on a 324-prompt test set.

Effortless

Describe it in plain words, see it in 3D in about a second, hold a printed try-on model, and compare quotes side by side.

[ $ ] // Outlook

$600K expected
net revenue in 2031

Current trajectoryUpside

$600K: expected net revenue in 2031
Up to $1.2M: net revenue in 2031
$85–145M: total market a year
$18–26M: reachable today · Order fees on custom rings bought online

Year	2027	2028	2029	2030	2031
Expected net revenue (current trajectory)	$0	$20K	$110K	$310K	$600K
Up to	$0	$50K	$230K	$630K	$1.2M

[ 05 ] // Release

Launching
Q4 2027

Dec 2024
Plan presented to investors
Product plan, research plan, business model and financial model.
Nov 2026
Working platform and test baseline
Design studio, refine editor, marketplace and order journey across five categories, with a 324-prompt evaluation baseline.
Q4 2027
Public launch
Open to buyers, jewelers and verified manufacturers.

[ 06 ] // Three sides

Who it’s for

Buyers

People who want a custom piece without knowing how to design one. They want to describe what they like, see it, and know the price is fair.

Jewelers and designers

Small and mid-size shops without powerful computers or a deep network of verified manufacturers. They want faster designs and a shorter route to production.

Manufacturers

Makers who want custom work to fill capacity. Leads that arrive with a finished design and a specification make custom work more profitable.

[ 07 ] // Market

Sized from the bottom up,
not from a report

Nobody agrees on the size of the custom slice. The gap comes from what each report counts, so Goldsmith sizes its opportunity from the manufacturers and buyers it can reach.

Measure (2024)	Estimate	What it counts
All jewelry sales	$367B–$371B	Two aggregator estimates of global jewelry revenue
Custom jewelry services	$1.09B–$3.63B	Services only; the range depends on the publisher
Customized jewelry products	$31.8B–$36.2B	Broader definition that includes made-to-order products

In a 2024 review, none of the common jewelry CAD tools paired design from a text description with a marketplace where manufacturers compete on the same file.

[ 08 ] // Questions people ask

Buyers, jewelers
and manufacturers ask

Do I need to know how to design jewelry?

No. You write what you want in plain words and choose from the candidates. Then you change the stone, the metal and the fit with bounded controls, or ask in words and approve the change before it applies.

What can I design?

Rings, pendants, earrings, necklaces and bracelets. Ask for a kind of piece Goldsmith doesn’t support and it says so plainly.

How do I know it can be made?

Every version is measured against a manufacturing rule profile, and the report shows what was measured, the limit, and pass or fail. A design that fails and can’t be fixed is never shown.

How do I know the price is fair?

Every manufacturer quotes on the same frozen design file, in the same line items, so you compare price, timeline and services like for like.

Can I hold it before I buy?

Yes. Your top candidates are 3D-printed at true size as try-on models, with the stone as a separate part. An order names exact design versions, so later edits don’t change what you were sent.

When does the manufacturer get paid?

After delivery. Your payment is held until then.

Who owns my design?

Your designs are private by default, and Goldsmith claims no ownership of them. The version history records every change you made.

I’m a jeweler. What do I get?

A workspace to measure a design, run it against any rule profile, queue renders and export files. You can edit beyond the range a buyer can, under the same checks.