A pink diamond ring is expected to return more than $AUD13.8 million at an upcoming jewellery auction at Phillips in Geneva. | Source: Phillips

18-carat Kashmir sapphire with diamond shoulders

Bulgari's emerald and enamel 'Serpenti' belt, circa 1970

Van Cleef & Arpels' Diamond sautoir, 1920s

Graff's pair of fancy yellow diamond and diamond earrings weighing 20.33 and 21.38 carats