Complex sentence: The ICFTU further claimed that child labour was prospering in the diamond industry in Western India, where the majority of the world's diamonds are cut and polished while workers are often paid only a fraction of 1% of the value of the stones they cut.
Split into simpler sentences: The ICFTU further claimed that child labour was prospering in the diamond industry in Western India, where the majority of the world's diamonds are cut and polished. Workers are often paid only a fraction of 1% of the value of the stones they cut.