Onyx is distinguished by its inimitable black. It is a stone widely used in jewelry for its elegance.



The name Onyx comes from the Greek "Onux" which means fingernail. This stone was commonly used in making seals in Roman times. She has the particularity of not sticking to the wax. Extracted in Brazil, Mexico or Russia, Onyx experienced a new boom during the reign of the Queen of England.


Onyx belongs to the mineral family of silicates. It is composed of silicon dioxide, it is a variety of chalcedony. Its hardness is 7 on the scale of Mohs, it has a specific gravity of 2.65. It is a black opaque stone, but some varieties may reveal white stripes. Following various treatments, onyx can turn red or yellow.


The virtues of this stone would be numerous, both for the body and for the mind. It would promote speech and pronunciation. Onyx would help fight against allergies and addictions. This stone would promote the sanitation of the liver and kidneys.

It would have the effect of bringing benevolence towards oneself, it would also reinforce concentration and positivity.

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Corentin Von Kaenel has always loved geometry, precision, and the notion of proportion. He started humbly in a small workshop in Sainte-Croix, investing in conventional machines to develop his business and his know-how. In 2022, he proudly opened his own business, dedicated to creating jewelry and luxury products. A journey marked by passion and determination, which has shaped his destiny in the world of creation and precision.

When craftsmanship meets excellence, luxury becomes a work of art.


Respect for traditions, innovation, and know-how guide the way in which its creations are designed and manufactured. These values ​​combine to create products of excellence, where aesthetics, creativity and craftsmanship are at the heart of its approach.

The workshops are located in Sainte-Croix, a Swiss commune located on the balcony of the Jura.

Considered the cradle of excellence in artistic mechanics, music boxes and watchmaking, this town offers limitless creative openness.

CVK places a high priority on ethics.

The traceability of materials, whether metals or precious stones, is essential. Partner companies that work with precious materials are certified by the RJC.

Swiss Made

Swiss goldsmiths and jewelers proudly displaying the “Ecological Gold” label are committed to creating exceptional jewelry without using precious metals extracted from mines. Their semi-finished materials come from a source certified by the Responsible Jewelery Council (RJC) of London, ensuring the exclusive use of recycled precious metal. This approach respects both our commitment to geographical standards protected by Swiss and international laws and treaties, while maintaining quality and authenticity in our creations, in accordance with Swiss Made requirements.