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Rio Tinto diamond encrusted coins valued at $1.8 million for sale in Australia

A $1.8 million coin trilogy boasting coloured diamonds found at Rio Tinto’s Argyle mine has been unveiled at the Perth Mint with international buyers already showing interest in the unique collection.

The Australian Trilogy is comprised of three one-kilogram coins struck from gold, platinum and rose gold, with each featuring a different native animal.

Each of the precious metals coins has either a pink, purple-pink or violet diamond, which were unearthed at Rio Tinto’s Argyle mine.Each of them has either a pink, purple-pink or violet diamond, which were unearthed at Rio Tinto’s (ASX:RIO) Argyle...

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