BENGALURU/SINGAPORE – Singapore state investor Temasek Holdings is considering investing US$100 million (S$132.6 million) in Indian jeweller BlueStone for a stake of about 20 per cent, two sources with direct knowledge of the matter told Reuters. The investment would value Bengaluru-based BlueStone, also backed by venture capital firm Accel and Indian industrialist Ratan Tata, at close to US$500 million, said...