"The letter 'T' is sculptural and bold and very closely linked to the architecture of New York City," says Tiffany & Co.'s Design Director Francesca Amfitheatrof. Part of her first collection for the brand, this stunning necklace is made from 18-karat white gold. It features a shimmering pavé diamond-studded curved bar, totaling 0.01-carats, inspired by the iconic brand's initial.