What is the 'pavilion' of a diamond?

What is the 'pavilion' 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...

In a diamond, the pavilion is the space below the girdle. The girdle happens to be the centre of the diamond. The pavilion is the behind the scenes part that actually reflects light that's entering the diamond back through the crown at the viewer.