October 18 (SeeNews) - The blue-chip index of the Belgrade Stock Exchange, the BELEX15, rose on Friday, lifted by gains in construction company Jedinstvo [BEL:JESV], insurer Dunav Osiguranje [BEL:DNOS], Aerodrom Nikola Tesla [BEL:AERO], and oil and gas company [BEL:NIIS], bourse data showed.