By Erika Winters
Rio Tinto has launched its first sustainable jewelry collection. Named "Nature's Beauty," the collection is made with gold from Rio Tinto's Kennecott Utah Copper Mine, the same mine that provided metal for the London 2012 Olympic medals. Rings, necklaces, earrings, and cuffs are set with champagne and white diamonds from Rio Tinto's Argyle Diamond Mine in Australia.
