Inspired by the Aluwalia dynasty???s famous collection of antique and modern jewels, which includes fascinating adornments commissioned from Cartier in the 1920s and ???30s by one of Singh???s grandmothers, the ebullient entrepreneur spends his days creating gem-studded rings, bracelets, and other personal ornaments donned by women such as Padma Lakshmi and Beyonc??.Singh, who is 38, decided eight