Jean-Marc Lieberherr says Rio Tinto will work with retailers such as Chow Tai Fook to develop jewellery collections. Photo: Edward Wong

Diamond traders go in search of higher margins as costs rise

Rio Tinto, De Beers adopt different approaches to deal with limited supply, rising mining costs

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Jean-Marc Lieberherr says Rio Tinto will work with retailers such as Chow Tai Fook to develop jewellery collections. Photo: Edward Wong
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