Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. A 16.53-carat alexandrite and diamond ring sold at Sotheby’s for $1.92mn in ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. When it comes to diamonds, age is beauty. The diamond industry has been trading for centuries on the ...

This 7.19-carat alexandrite was cut to feature its beautiful color change. When the light source changes from daylight to incandescent light, the gem’s color changes from bluish green to reddish ...