Laser Engraving Gold, Silver and Precious Metals
Last updated: May 2026
Short answer: fiber lasers engrave and mark gold, silver, and platinum for jewelry and hallmarking. Precious metals are reflective, silver most of all, so fine jewelry work uses a lower-power MOPA fiber laser for precise, shallow detail that does not damage the piece.
Marking precious metals with a fiber laser
Gold, silver, and platinum all reflect the 1064 nm fiber wavelength, with silver being the most reflective metal there is. The trick for jewelry is not raw power but control: a fine focused spot at lower power produces crisp, shallow marks, hallmarks, serial numbers, and personalization, without melting or distorting delicate pieces. A MOPA source gives the cleanest, most repeatable results across karats and finishes.
What is it used for?
- Inside-ring engraving and personalization (dates, names, messages).
- Hallmarks and maker’s marks.
- Serial and anti-counterfeit marks on high-value pieces.
Which laser do you need?
For jewelry, a 20W MOPA or 30W MOPA fiber laser hits the detail sweet spot. Every JPT galvo includes a rotary, so inside-ring engraving works out of the box. See our laser marking for jewelry page and the full fiber laser range, and our overview of metal engraving machines.
Frequently asked questions
Can a fiber laser engrave silver?
Yes. Silver is highly reflective, so it needs the right parameters and benefits from MOPA control, but engraving and marking silver is routine in the jewelry trade.
Will it damage the piece?
Controlled low-power marking is shallow and precise, which is exactly why jewelers use fiber lasers for personalization and hallmarking.
Can it engrave the inside of a ring?
Yes, using the rotary that is included with every JPT galvo machine. The ring mounts on the rotary and the laser engraves the inner surface.
Does gold karat matter?
It works across karats. Softer high-karat gold marks easily; the parameters are simply tuned to the alloy.
