What gets marked on jewellery
Laser marking on jewellery is done for two reasons. The first is identification: a shop logo or maker's mark, plus a design or lot number that ties each piece to stock records. The second is personalisation, which covers names on pendants and lockets, dates inside rings, initials on bracelets and kadas and short messages on steel couple bands. Personalisation is usually taken at the counter, so the machine has to sit in a shop and be quick to set up for a single piece.
Hallmarking is a separate matter. Under BIS hallmarking, gold jewellery carries the BIS mark and purity grade along with a 6-character alphanumeric HUID (Hallmark Unique Identification) code, and these are applied at BIS-recognised assaying and hallmarking centres, not by a jeweller's own machine. The machines on this page are for the jeweller's own marks and for customer personalisation.
Which laser marking machine suits jewellery
For laser marking on jewellery, a fiber laser (1064 nm) is the usual choice. Gold marks well and can be engraved deep enough for a name pendant to read clearly, as the gold jewellery guide explains. Silver reflects more of the beam and spreads heat quickly, so it needs slower speeds or more passes, and very thin silver should be checked for warping; the silver jewellery guide covers this. For a jewellery bench, a desktop fiber laser in the 20 to 50 W range is common, with the higher end helping on silver and deep engraving.
A MOPA fiber laser suits stainless steel fashion jewellery, where its adjustable pulse width gives colour marks and very clean black marks on polished steel. It also gives finer control on thin gold and silver, which helps with photo engraving and delicate script. For a shop doing mostly gold and silver names, a standard fiber laser does the job, and MOPA becomes worthwhile when steel and colour work become a regular part of orders.
When a standard fiber laser is enough
A shop that marks mostly names and logos on gold and silver rarely needs MOPA. A standard fiber laser marks both metals well and can cut thin sheet for name pendants. MOPA is worth it once colour marks on steel or fine photo work become regular orders.
Setting up the job
Jewellery is small, so fixturing is about holding parts still and level. A soft-jaw clamp or a putty bed holds pendants flat, and a rotary with a small chuck turns rings and bangles for marks around the outside. Engraving inside a ring needs the ring tilted on the rotary so the beam reaches the inner wall at an angle, and narrow sizes limit how much text fits. Use the red-light preview to place text before firing, because a misplaced name on gold cannot be undone without reworking the piece.
For name pendants cut from sheet, a fiber marking machine can cut thin silver or gold sheet over several passes. It is slower than a dedicated cutting laser but practical for one-off and small-batch names. Collect the offcuts and fine dust from cutting, as precious metal is recoverable. A fume extractor near the lens also helps, because fine metal particles settle on the protective window over time and reduce power at the work.
What to check before you buy
- Metal trials. Test on your actual gold karat and silver purity, since alloys differ in how they mark and engrave.
- Lens choice. A smaller field lens gives a finer spot for tiny script, so match the lens to your smallest text.
- Ring rotary. Check the chuck holds small ring sizes and your widest bangles.
- Script support. Confirm Tamil and other Indian scripts render properly, including vowel signs, at small sizes.
- Photo engraving. If you plan to offer photo pendants, ask for a sample on your own metal.
- Sheet cutting. If you cut name pendants, check edge quality and cutting time on your usual sheet thickness.
- Counter safety. For a shop floor where customers stand nearby, choose an enclosed unit or proper shielding.
- Hallmark scope. Remember that HUID and purity marks come from a hallmarking centre, not from this machine.
Laser marking on jewellery in Tamil Nadu
Coimbatore is one of India's major gold jewellery manufacturing centres, with workshops making pieces for jewellers across the south. Chennai's T. Nagar is the state's best-known jewellery retail area, where showrooms and smaller shops take personalisation orders at the counter. Salem has a long-established silver anklet (kolusu) making cluster, and Madurai and Trichy have a steady devotional trade in deity pendants and temple-style jewellery. Marriage seasons drive demand for named gold pieces and engraved silver gifts across the state.
NMB Enterprises is based at Poonamallee, Chennai, and supplies IndoForeign fiber laser systems for laser marking on jewellery. Jewellers in Coimbatore, Salem, Madurai or any other town can send photos of their pieces and the metals they use by WhatsApp to 098417 60722 for a machine recommendation. Related guides include silver pooja articles and cufflinks and tie pins.