What are 'treated diamonds'?

What are 'treated diamonds'?

John Cordova (Vice President of Human Resources, Robbins Bros.) gives expert video advice on: What is a diamond?; Why are diamonds so special?; What's the best advice for a couple buying an engagement ring? and more...

Treated diamonds are diamonds that have been treated or altered from their natural state. It's conventional wisdom that the cutting of the diamond is the only thing that man does to unleash its actual beauty. Treated diamonds take them a step further. A treated diamond can be treated to enhance its clarity, to change its color and to give it an appearance that isn't altogether from nature.