Nightingales earrings. Fashion jewellery brand Carat* have launched three new collections dubbed Millennium, The Heroines and Nightingales, designed to target a cross-section of ambitious, modern and confident female consumers. The Heroine collection features bold designs with Pop Art superhero-inspired branding, whereas Millennium mixes fashion and fine pieces with minimal rings and a twist on the friendship bracelet. Finally, Nightingale incorporates elegant feathered designs with delicate filigree details and micro pave.