Jewellery prototyping, from a first print to a finished sample
A jewellery prototype is a piece made early enough to change. Gemlea Creative Atelier makes first samples and prototypes for jewellery designers and brands, in gold, platinum, silver, titanium and alternative materials: printed resin and wax to judge the form, first castings to judge the metal, and pieces worn and tested before anyone commits to a run.
The stages of a jewellery prototype
Each stage costs less than the one after it and answers fewer questions, so a design moves through them in order and is changed at the earliest one that shows a problem:
- A resin print: proportion and scale, held in the hand and tried on, quick to make again.
- A wax or castable-resin pattern: the form the metal will take, with stone seats and details checked.
- A first casting: the real metal, its weight, how it fills the mould and how it takes a polish.
- A set sample: stones in, fittings working, the piece finished and worn as a customer would wear it.
3D printing and wax in jewellery prototyping
Most prototypes now begin as a print from the CAD model. A print in plain resin is not cast; it is there to be looked at and worn, and several versions can be printed side by side, with the band a little wider or the stone a size larger, so a choice is made with the pieces in front of you rather than on a screen. Castable resin and printed wax are made to burn out cleanly in the flask, and they become the metal.
Wax carved by hand still has its place, for organic forms and surfaces that are easier to cut than to model. Whichever way the pattern is made, it is checked against the drawing before casting: a printed ring can look right and still be too thin in the shank to survive polishing.
What a first casting shows
A casting tells you what no print can. The metal’s weight in the hand, and its cost, which follows the weight. Whether every part has filled, or whether there is porosity, small holes from trapped gas, that shows as pitting once the piece is polished. How much detail survives finishing, because filing and polishing take metal away and soften fine edges.
The weight of a first casting also settles a legal question early. In the UK, pieces above the exemption weights for gold, silver, platinum or palladium have to be hallmarked before they are sold as precious metal, so knowing the weight of each piece from its first casting avoids a surprise at the assay office.
Fit and wear testing
A piece is worn for days, not minutes, because comfort and wear show over time. What is checked depends on the piece:
- Rings: the size as it feels on the finger, the comfort of the inside edge, the height of the stone, and whether it catches on clothing or stacks with other rings.
- Earrings: the weight on the ear, how a drop hangs and faces forward, and whether the backs hold.
- Necklaces and pendants: the drape, the chain length on the body, and whether the pendant turns.
- Clasps and fittings: whether they open and close with one hand, and stay closed when they should.
Changes before production
A change at the prototype stage is a change to a file and a print; the same change after a run has been cast is a change to every piece in it. Each change found in testing goes back into the drawing and the CAD model, so the file that carries the run is the one that was tested, not an earlier version.
The prototype that is finally approved becomes the reference sample: the piece the run is checked against for size, weight, finish and setting. For pieces made in numbers, a master model is often made from it, and a rubber mould from the master, so every wax in the run comes from the same approved form.
How it works
- 01
The brief
A sketch, a paint-up, a drawing or a CAD file, with the metal, the stones and what the piece has to do when worn.
- 02
Printed first
Resin prints of the form, in more than one version where a choice is open, held and tried on.
- 03
Cast and set
The chosen pattern cast in the finished metal, finished, and set with the stones it was drawn for.
- 04
Worn and changed
The sample worn and tested, and every change carried back into the drawing and the model.
- 05
Approved
One sample agreed as the reference the run is made and checked against.
Questions
What is jewellery prototyping?
Jewellery prototyping is making a design in stages before it is produced: resin prints to judge proportion and fit, a wax or castable pattern, a first casting in the real metal, and a set, finished sample that is worn and tested. Each stage is a chance to change the design while a change is still cheap.
What is the difference between a 3D print and a jewellery sample?
A 3D print shows the form: its size, proportion and how it sits when worn. A sample is the piece in its finished metal, with its stones set and its fittings working, so it also shows the weight, the finish and how it wears over days. Most designs need both, in that order.
Can I prototype in silver before making the piece in gold?
Brands sometimes do, to judge a form at lower cost. Silver is lighter and softer than gold and a different colour, so a silver prototype says little about weight, wear or how a stone looks against the finished metal. A sample in the final metal is usually made before a piece is approved for production.
How many prototypes does a piece of jewellery need?
As many as it takes for the sample to be right, and no more. A simple band may go from one print to an approved sample; a piece with moving parts, a clasp or a cluster of stones usually needs more rounds. Testing early prints side by side cuts the number of castings needed.
Do you make jewellery prototypes for small brands?
Yes. Gemlea Creative Atelier makes first samples and prototypes for jewellery designers and brands at any point of their business, from a first piece to a new line in an established range, in gold, platinum, silver, titanium and alternative materials.
How much does jewellery prototyping cost?
Gemlea does not publish prices for prototypes. Fees, minimums, lead times and NDAs are agreed in the brief, project by project, because a single printed ring and a collection of set pieces in several metals are very different amounts of work.