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and refining copper. about diamonds products and uses rio tinto produces the full spectrum of diamonds in terms of qualities, sizes and colours. our diavik mine, for example, produces a high proportion of large, white, gem-quality diamonds, traditionally associated with engagement rings, luxury jewellery
and collector pieces. our argyle mine, by contrast, produces predominantly small, coloured stones of diverse quality - generally destined for the more affordable fashion jewellery market - as well as the rare and highly prized pink diamonds sought after by high-end collectors, designers and diamond...
https://www.riotinto.com/copperanddiamonds/copper-and-diamonds-in-depth-1539.aspx