Rio Tinto has unveiled the 2019 Argyle Pink Diamonds Tender collection, comprising 64 diamonds and weighing a total of 56.28 carats, Mining Weekly reports.

The tender, titled “The Quest for the Absolute” features six hero diamonds including the Argyle Enigma – a 1.75-carat modified radiant fancy red diamond; the Argyle Amari – a 1.48-carat heart shaped fancy vivid purplish pink diamond; the Argyle Elysian – a 1.20-carat modified cushion shaped fancy vivid pink diamond; the Argyle Verity™ – a 1.37-carat oval shaped fancy vivid purplish pink diamond; the Argyle Opus – a 2.01-carat round shaped fancy intense pink diamond; and the Argyle Avenoir – a 1.07-carat oval shaped fancy red diamond.

Rio Tinto copper & diamonds CEO Arnaud Soirat commented: “Rio Tinto’s Argyle mine is the first and only ongoing source of rare pink diamonds in history. With the lifecycle of this extraordinary mine approaching its end, we have seen, and continue to see, unstoppable demand for these truly limited-edition diamonds and strong value appreciation.”