What is the 'girdle' of a diamond?

What is the 'girdle' of a diamond?

John Cordova (Vice President of Human Resources, Robbins Bros.) gives expert video advice on: What is the 'girdle' of a diamond?; What is the 'crown' of a diamond?; What is the 'pavilion' of a diamond? and more...

The girdle of the diamond is actually the fattest part of the diamond. It's the perimeter of the diamond, and usually the girdle is what's used to hold the diamond in place in the setting.