Growing rich Chinese middle class lured by the sparkle of prized gem

Chu Xiao's office is only 50 meters from Antwerp's central railway station. Through a window, the Beijinger can see crowds of people from every corner of the world flowing in and out of the city every day.

The scenery through that window hasn't changed much in the past century, but the owner of this office changed three years ago from a Jewish businessman to a Chinese one.