Deep Marking for Extraordinary Jewels: the TAU Revolution

āœ³ļø An interesting case from one of our clients in India

In a jewelry workshop in Mumbai, India, a goldsmith proudly watches the light of his TAU CNC machine by Cielle deeply engrave an intricate design onto a platinum bracelet.

Each engraved line adds personality and value to the jewel, enriching it with decorations that were previously impossible to achieve with such definition.

Since adopting TAU, this customer has been able to enrich his jewelry with deeply engraved patterns, combining cutting-edge technology with the rich aesthetics of traditional craftsmanship.


Unique pieces that tell a story, where tradition and modernity meet—and customers are captivated by the details and precision of each work.

āž”ļø Centering the design via projection is incredibly easy

TAU also gives you advanced tools for maximum precision in every operation. The laser projects the engraving area directly onto the jewel (e.g., a bracelet) before the actual engraving begins.


As shown in the image, the software overlays the graphic in real-time onto the piece, allowing perfect alignment on the first try. Thanks to this function, you can place the pattern exactly where you want, eliminating errors and material waste.

Moreover, TAU allows you to monitor the process in real-time, either through the protective window or on your computer screen. This means full control over the final result and the certainty that every engraving—no matter how complex—will match your vision.

āž”ļø Why choose a MOPA laser?

Let’s explore what makes the heart of TAU so special: its 50W MOPA laser source. Unlike traditional lasers, this technology offers features that enhance the quality and versatility of laser marking:

  • Variable pulse: TAU uses a MOPA-configured fiber laser that allows you to adjust the pulse duration. You can choose short or long pulses depending on your needs. This flexibility lets you "shape" the laser energy precisely, achieving both fine details and deep marks.
  • Excellent results on shiny metals: Perfectly engrave even on reflective materials like polished steel or silver. TAU ensures clear and uniform markings without halos or distortions.
  • High contrast and black marking: With pulse control, TAU can create deep black marks by heating the surface (annealing) without removing material—ideal for logos and text.
  • Power and precision for jewelry: The 50W laser offers both speed and power for deep engraving and fine detail. Ideal for gold, silver, brass, and copper without damaging polished surfaces.

The case from India shows that innovation in jewelry is possible with the right technology. If you also have special engravings to make, now you know who to contact.

With the TAU machine by Cielle, you can turn any idea into a stunning piece of jewelry, quickly and with the highest quality.

āž”ļø Want to know more? Contact us

Don't hesitate to get in touch to discuss your lab's needs, request a demo, or simply learn more—we're here to support you in creating your most ambitious pieces.

Speak with our expert

Call Mr. Luigino directly at +39 348 432 0320


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