This is the information I find:
GOLD
We ask our suppliers to exclusively source gold that is:
- in accordance with those principles outlined in the Kering Ethical Gold Framework, via Kering selected refiners;
- artisanal gold from mines that are certified by credible third parties such as Fairtrade or Fairmined;
- provided by suppliers from RJC certified mines or RJC certified mining companies;
DIAMONDS
We ask supplier to adhere to the Kering Diamond Code and endeavor, as of now, to source diamonds from direct and indirect Suppliers who are RJC (Responsible Jewelry Council) Certified Members accompanied by the World Diamond Council System of Warranties statement;
Diamonds can also be sourced throughout a supply-chain composed of actors who implement one or several of the following private ethical standards:
- De Beers Best Practice Principles (BPP)
- De Beers Forevermark
- Dominion Diamond CanadaMarkTM