The Pink Caviar collection consists of a range of stunning designs using Australian pink diamonds from the Argyle mine. Australian Pink Diamonds from the Argyle mine are classified as "beyond rare", and less than 0.1 % of the diamonds mined from the Argyle diamond mine are pink. Because of this and combined the closing of the mine in late 2020, Australia pink diamonds from the Argyle mine are increasing in price and sought after worldwide by collectors and savvy investors.

The Pink Caviar range not only consists of stunning pink diamonds from the Argyle mine but are manufactured to the highest possible standards, with the utmost attention to detail from highly trained goldsmiths. Each Pink Caviar piece comes with a complimentary wallet-sized certification card (noting any relevant Rio Tinto Diamonds NV Lot Number) and a lifetime warranty on the quality of workmanship.