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Acting with courage, integrity and responsibility

Developing the trust of our partners and employees

Developing long-term partnerships

Partenariats Durables

Certifying our commitments


Developing long-term partnerships

We want to build strong and lasting relationships with our partners, working with respect and honesty

Céline joined our Parisian workshop Coringer as a jeweller in 2006. When she decided to start her own business in 2019, we immediately supported her. Find out more about her story:

"I wish to work with Coringer for a long time, because they are honest and trustworthy people. I still feel supported, I have kept in touch with my former colleagues.

I worked at Coringer's for almost 14 years, I learned a lot, I grew up there. They have always been very kind to me, no matter what."

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Certifying our commitments

The certifications we received confirm our position in favour of a more responsible production, respectful of both the environment and men and women

Logo du Responsible Jewellery Council

Losange and Coringer have been certified by the Responsible Jewellery Council (RJC) since 2014. It is the world's leading standard-setting organisation for the jewellery and watch industry.

The Chain of Custody (CoC) certification, obtained by the two companies in 2020, is a guarantee to our partners that we use materials of known origin, processed in compliance with the ethical and environmental standards developed by the RJC.


We obtained the BREEAM® (Building Research Establishment Environmental Assessment Method) certification at the Very Good level for the construction of the manufacture of Losange in Besançon.


The new manufacture in Toulon-sur-Allier is being built to even higher standards: we are aiming for the BREEAM® certification at the Excellent level.

Taking into


environmental and social issues

The products we use comply with the European REACH regulation, which aims to make the production and use of chemicals in European industry safer.

This standard protects the health of the employees who use them as well as that of the end consumers who wear our products.

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