Council welcomes Van Cleef, Boucheron and Leo Schachter among others.
The Responsible Jewellery Council (RJC) has welcomed 14 certified members in the space of a fortnight as its service becomes recognised across Europe, India and the United States.
Last Friday British jewellery designer Harriet Kelsall, who specialises in bespoke jewellery, was announced a member having been audited in last month.
The RJC has also announced the membership of several other jewellery brands, diamond manufacturers and associated companies over the past two weeks, including Van Cleef & Arpels, Boucheron and Supergems.
Boucheron was successfully audited by KPMG France. Pierre Bouissou, Boucheron’s chief executive said: "Since 1858 Boucheron has adhered to the highest standards not only in the spectacular designs of its creations but also in upholding its strong ethical code.
"The RJC certification corresponds to the house’s continued endeavour to embody excellence and responsible business practices both internally and externally; a commitment we share across the PPR Group."
The other companies announced as RJC members include Eurostar Diamond Traders, Shrenuj NV, S.V Gems NV, DiaJewel NV, Leo Schachter Diamonds and Kama Schachter Jewelry, SuperDiam BVBA, Arjav Associates NV and E. Shreiber Inc.
Elliot Tannenbaum, Leo Schachter Diamond’s senior principle said: "As one of the largest sightholders and manufacturers of fine diamonds in the world, living up to the highest standard of industry compliance and supply chain integrity across our worldwide operations is not only critical to our success, but also crucial to the overall prosperity of the diamond industry.
"RJC certification of Leo Schachter Diamonds is a significant step in demonstrating the high standards to which we hold our management and employees, and the values and principles upon which our future depends."
The Responsible Jewellery Council is an international not-for-profit organisation that has around 340 member companies across the jewellery supply chain, from diamond manufacturers to brands and independent designers.
RJC Members join to show their commitment to promoting responsible ethical, human rights, social and environmental practices in a transparent and accountable manner throughout the industry from mine to retail. This commitment aims to reinforce consumer and stakeholder confidence in jewellery products.