How are solder joints on silver jewelry repaired without damaging stones?

925 sterling silver jewellery, set with lab grown diamonds and made in our own Shenzhen workshop.

Posted on October 31, 2026by test111

Talk · Repair & Troubleshooting

QThe questionEditorial scenario written by the ZKZ team. Not a customer post.

A buyer needs a silver ring resized and is told the jeweller may need to remove the lab-grown diamond or use a special approach. They ask how soldering is done near stones and what risks exist.

ZKZ Editorial TeamMain answer · Product & gemmology desk

Soldering uses heat, and stones differ in how much they can take. Jewellers protect stones, work away from them or remove them first. The safest approach depends on the stone, the design and how far the join is from the setting.

Why heat matters

Fact GIA's care guide says diamonds are very stable but that situations involving sudden and extreme temperature changes are the more threatening, and that diamonds burn at about 850°C, a temperature that jewellers' torches can reach.

Our advice Silver conducts heat well, so heat applied to a join can travel along the band to the stone. Lab-grown diamonds are diamonds, but other stones, glued stones and treated stones can be more sensitive.

How jewellers protect stones

Remove the stone: the safest option for many repairs.
Heat sink: wet cloth, paste or a clamp to draw heat away from the setting.
Work far from the stone: a join at the bottom of a band is easier than one next to a setting.
Controlled heat: a small, precise flame or a laser welder for tiny joins.
Pickling and cooling: a controlled process to clean the metal without thermal shock.

What increases risk

Stones set close to the join
Glued or fracture-filled stones
Soft stones such as pearls and opals
Eternity bands where stones go all the way round

Questions to ask

Will the stone be removed or protected?
What happens if the stone is damaged, and who is responsible?
Is laser welding an option?

Our advice A good jeweller will explain the plan and the risk before starting. Ask for written terms if the stone is valuable.

It depends How much risk remains depends on the stone, the join location and the jeweller's equipment and skill.

Uncertain We cannot guarantee that no stone will be affected. Even careful work carries some risk, which is why the jeweller should tell you the plan first.

Sources

GIA, Diamond care and cleaning

Fact = stated by the cited source. Our advice = editorial recommendation. Uncertain / it depends = limits of what can be said in general.

Other perspectives from the ZKZ team

WSZKZ Editorial TeamWorkshop perspective

Our rule is simple: if the stone is close and we cannot protect it, we take it out. Re-setting a stone is far cheaper than replacing one that cracked.

CSZKZ Editorial TeamCare & maintenance perspective

Tell the jeweller about every stone and any past repairs. Glued or treated stones need to be treated differently from loose-set ones.

SEZKZ Editorial TeamSelection perspective

If you expect to resize a ring, avoid designs with stones all the way round. They limit what a jeweller can do without risk.

Have a different question? Ask our team, or browse more answers in Talk.

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