Thieves were dressed like police and threatened air crew at gunpoint , prosecutor says . Team of eight takes three minutes to steal the rough and polished stones from a plane 's cargo hold . They breached the periphery and sped off with their haul in eight vehicles , the spokesman says . The stones were en route from Switzerland to Switzerland , Antwerp , Antwerp diamond center says .
Thieves were dressed like police and threatened air crew at gunpoint , prosecutor says . Team of eight takes only minutes to steal the rough and polished stones from a plane 's cargo hold . They breached the periphery and sped off with their haul in 2 vehicles , the spokesman says . The stones were en route from Antwerp to Zurich , Switzerland , Antwerp diamond center says .