Christo Wiese, South Africa’s billionaire retail king, is going back to the future. The 82-year-old serial investor, who steered the expansion of both Africa’s biggest clothing retailer and the continent’s largest grocer, has dived into something that harkens back to the start of his storied career nearly half a century ago: diamonds. “I’ve always been … Continue reading South African Shoprite billionaire Wiese returns to his diamond-hunting roots