Institute of Sustainability for Chemicals, Energy and Environment (ISCE 2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Singapore 627833, Republic of Singapore ...

A blue sapphire cluster weighing 80kg has been discovered in Rakwana, Ratnapura, Ada Derana correspondent reported. Reportedly, the stone, which was in possession of a businessman from Colombo, has ...