Marion Cotillard, who recently joined the Chopard's co-president Caroline Scheufele and producer Livia Firth in promoting the importance of ethical labels, has designed a necklace and bracelet for the Swiss brand, which features opal stones mined from a family-owned business in Australia.
She said: "You design while thinking of the people who work on extracting the stones, so it's a totally different energy. Why should the creation of dreams and luxury turn into a nightmare for the people who are providing the raw material?"
The 39-year-old actress, who also sported Chopard's Green Carpet Collection at the Cannes Film Festival in 2013, will unveil her designs in May when the festival kicks off once again.
Livia, who is the wife of British actor Colin Firth, is thrilled with the team up and described the process of using ethically obtained stones as a "new direction" for jewellery making.
The star has also produced a film entitled "The True Cost", which explores the immoral side of the high street fashion industry which will debut at Cannes.
She explained to WWD: "It's really a journey into fast fashion and, I'm not sure how to say it politely, but basically how f**ked up this whole thing is. Things are complicated and murky and totally unjust and wrong, so it's a big call to reform, a big call to consumers to try to take a step back and start consuming maybe a bit more consciously."