DiamondBuzz
Rio Tinto’s Final Beyond Rare Tender Marks the End of a Diamond Era
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.
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.
DiamondBuzz
Pandora Adds Carbon Footprint Labelling For LGDs
New Level Of Transparency Empowers Consumers To Compare Climate Impact Of Their Diamond Jewellery
For decades, diamonds have been graded by the traditional 4Cs: Cut, Colour, Clarity and Carat. Now Pandora is adding the 5th C, declaring the carbon footprint of every Pandora Lab-Grown Diamond as part of the product information on pandora.net alongside the traditional four grading criteria.
The carbon footprint covers all emissions from the diamond crafting process: from producing the raw materials used to grow the diamond all the way until it is cut and polished, ready to leave the diamond facility.
As an example, a one carat Pandora Lab-Grown Diamond has 12.58 kg of CO2e emissions. This is around 90% lower than a mined diamond of the same size.
By adding carbon footprint to the diamond conversation, Pandora gives customers an extra point of comparison and essential insight into the climate impact of their desired diamond jewellery.
CARBON FOOTPRINT COMPARABLE TO A PAIR OF JEANS
Lab-grown diamonds are chemically, optically, thermally and physically identical to mined diamonds.
Pandora stopped using mined diamonds in 2021 and is now only using lab-grown diamonds made with 100% renewable electricity and set in jewellery crafted from 100% recycled silver and gold.This significantly reduces the carbon footprint of the Pandora Lab-Grown Diamonds collection. For example, a 14k gold Pandora Infinite ring with a 1 carat lab-grown diamond has a comparable carbon footprint to a pair of jeans.
PANDORA TO SHARE FINDINGS
The carbon footprints of Pandora’s lab-grown diamonds have been calculated by external life-cycle assessment experts and published in a study verified by auditing firm EY. The study uses best practice methodology and is available on pandoragroup.com.
Adding a 5th C is a response to increasing consumer expectations to sustainability, and Pandora will share its methodology and findings with other jewellery makers to inspire greater transparency across the sector.
Pandora Lab-Grown Diamonds are currently available in the US, UK, Canada, Australia, New Zealand and Denmark with more countries to be added soon.
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