An American jewellery designer, a viral news report on the sale of fake jewellery and an FIR have led to unease in Jaipur’s famous Johri Bazar, one of the biggest markets for coloured precious stones in the country. During a trunk show in Kansas City, US, on April 11, US-based Cherish Nortje, 43, was informed that the 478 jewellery pieces designed by her — and manufactured by a Jaipur-based jeweller for $4,50,000 (around Rs 4 crore) — were “fake”. Two months later, sitting in a restaurant in Jaipur, where she…