Setting
Automatic diamond wax setting
Four models from the compact Pro Mini to the double-head ST-HDSSM, for channel, push, micro and prong settings.
For lab-grown diamond jewellery manufacturers
Equipment for lab-grown diamond jewellery manufacturers
More stones per design means setting becomes the bottleneck.
For manufacturers of lab-grown diamond jewellery, Semsons Tech supplies automatic diamond wax setting machines rated from 10,000 to 20,000 stones an hour, sorting trays for CVD and HPHT round stones from 0.8 to 3.0 mm, lab-grown diamond screeners for incoming goods, laser marking for logos and lot codes, and photography equipment. Lab-grown diamonds set on a wax setting machine exactly as natural diamonds do.
The shift
Why lab-grown jewellery changes the floor
Laboratory-grown diamonds have the same crystal structure as natural diamonds, so nothing about the setting itself changes: an automatic wax setting machine picks and places them the same way, at the same ±0.02 mm spot accuracy.
What changes is the design. As lab-grown stones get cheaper, pieces carry more of them, and the number of stones to set each month climbs faster than a bench of manual setters can keep up with. That is where automatic setting earns its place.
Two things need more care than with natural goods: casting stones in place, and keeping lab-grown and natural stones from mixing in incoming parcels.
By job
Equipment for each job
Sorting
Trays and nozzles by stone size
Ten sorting trays and five suction nozzles cover round stones from 0.8 to 3.0 mm, natural or lab-grown.
Screening
Lab-grown diamond screeners
A thermal tester cannot separate lab-grown from natural. A CVD/HPHT screener refers stones that could be lab-grown for further testing.
Marking
Laser marking
Mark your logo, lot codes or a message inside a ring, so every piece can be traced back to its batch.
Talk to someone who knows the machines
Tell us what you produce. We reply within one working day with a recommendation, a demonstration or a written quotation.
Casting in place
Casting lab-grown stones in place
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Use a stone-casting investment
One made for casting stones in place, not a standard investment.
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Run a cooler burnout
A lower peak temperature protects the stones in the flask.
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Cool slowly
Let the flask cool before quenching, rather than shocking the stones.
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Test-cast every new lot
Keep treated colour stones out, and cast a test tree whenever the stone supply changes.
Summarised from our lab-grown diamond setting and casting guide.
Read more
Guides for lab-grown production
- Lab-grown diamond jewellery: wax setting & casting The full guide
- Diamond testers explained Lab-grown, CVD and moissanite
- Manual vs automatic diamond setting What actually changes
- Why wax quality decides setting output The wax side of the bottleneck
- Increase production capacity Without rebuilding the floor
- How to choose a diamond wax setting machine The 2026 buying guide
Enquiry
Tell us your setting volume
Monthly stone count, stone sizes and the designs you make. We recommend a machine and the trays and nozzles to go with it.
What happens next
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A reply within one working day
With a model, and the consumables for your stone sizes.
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A demonstration on your own wax
With your own lab-grown stones, if you want one.
Lab-grown jewellery enquiry
Monthly stone count, stone sizes and designs help most.
Questions
Lab-grown jewellery questions
Can an automatic wax setting machine set lab-grown diamonds?
Yes. Laboratory-grown diamonds have the same crystal structure as natural diamonds, so an automatic wax setting machine picks and sets them the same way. Our sorting trays are listed for natural, lab-grown (CVD and HPHT), CZ and synthetic round stones from 0.8 to 3.0 mm.
Can lab-grown diamonds be cast in place?
Yes, with care: use a stone-casting investment, a cooler burnout and slow cooling, keep treated colour stones out of the flask, and test-cast every new lot of stones first. Our lab-grown setting and casting guide explains each step.
How do I check incoming diamonds for mixed lab-grown stones?
With a lab-grown (CVD/HPHT) screener. A standard thermal diamond tester reads lab-grown diamond as diamond, so it cannot separate them; a screener checks the diamond type and refers stones that could be lab-grown for further testing.
Which setting machine suits lab-grown jewellery production?
It depends on your monthly stone count, not the stone type. The Pro Mini is rated up to 10,000 stones an hour, the X4 Pro Plus up to 15,000 across two stations and the ST-HDSSM up to 20,000. We confirm the rating for your wax and stone mix before you order.
Does Semsons Tech sell lab-grown diamonds?
No. Semsons Tech supplies the machines, testers, tools and consumables used to manufacture jewellery, not diamonds or finished jewellery.