The 2021 Argyle Tender 'hero' stones – (from left) Argyle Stella, Argyle Lumiere, Argyle Eclipse, Argyle Solaris, and Argyle Boheme. Source: Rio Tinto

Patrick Coppens

The 2021 Argyle Tender 'hero' stones – (from left) Argyle Stella, Argyle Lumiere, Argyle Eclipse, Argyle Solaris, and Argyle Boheme. Source: Rio Tinto

A selection of blue diamonds from the 2021 Once In A Blue Moon collection, which will be offered alongside the 2021 Argyle Tender. Source: Rio Tinto

TOTAL ARGYLE STONES TENDERED, 1985-2020 Chart source: Jeweller analysis, GIA, excludes Petite Suites and Pink Everlastings

Comprising 70 diamonds weighing 81.63 carats, the 2021 Argyle Pink Diamonds Tender has a record number of diamonds larger than one carat.