RAPAPORT... The founders of Singapore-based retailer SK Jewellery want to buy out the company and take it private, aiming to gain greater control of its operations.OroGreen Investment, which is held by SK’s founders — non-executive chairman Lim Yong Guan, CEO Lim Yong Sheng and executive chairman Lim Liang Eng — will also delist the jeweler from the Singapore stock exchange. The three currently ow...