Who buys the jewellery? It's a new indicator of who-wears-the-pants in a household. Jewellery has traditionally been something gifted to women and even now that view holds strong: at a recent Business of Luxury summit, Johann Rupert, chairman of Richemont (whose group includes Cartier and Van Cleef & Arpels) talked about fine jewellery as something a man might want to give his wife or mistress.