Rio Tinto’s third and final Beyond Rare™ Tender, titled The Art Series: Into the Light, has concluded with strong global demand, securing the company’s place in the history of rare diamonds. The tender comes 40 years after the commissioning of the Argyle diamond mine in Western Australia and 22 years after the start of operations at the Diavik mine in Canada.
The 2025 tender featured 52 lots totalling 45.44 carats, including six Masterpieces — carefully curated sets highlighting the pinnacle of production from Argyle and Diavik — alongside 39 single stones and seven matched sets. The Argyle pink, red, and violet diamonds came from the final legacy inventory, making them among the last of their kind.
Singapore-based Argyle Pink Diamonds Icon Partner™ Glajz THG, in collaboration with Scandinavian jeweller Hartmann’s, won the coveted Lot 1 consisting of two Fancy Vivid Purplish Pink pear shapes and a 5.11-carat Flawless D-colour Diavik emerald-cut diamond. “We are delighted to win these extraordinary masterpieces of nature and look forward to honouring the powerful provenance of the Argyle and Diavik mines,” said John Glajz, Managing Director of Glajz THG.
Longtime Japanese partner Kashikey also secured three lots, including the only GIA-certified Fancy Red diamond in the collection. “To be part of Argyle’s history, from discovery to closure, has been invaluable,” said President and CEO Kazuya Taguchi.
Patrick Coppens, General Manager of Sales and Marketing, Rio Tinto Diamonds, described the tender as a fitting finale: “Presenting this final collection is a wonderful epilogue to Rio Tinto’s inspiring story of mining and marketing diamonds. The world is still captivated by their beauty, exceptional rarity, and pure provenance.”
Since 1985, Rio Tinto has sold approximately 2,500 carats of rare pink, red, and blue polished Argyle diamonds — less than 0.0003% of the mine’s total production — through its annual tenders. With Argyle closed in 2020 and Diavik scheduled to close in 2026, the Beyond Rare™ legacy now enters the annals of diamond history.
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