Can a diamond break?

Can a diamond break?

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...

A diamond can break, absolutely. It's the hardest substance known to man, but that doesn't mean that it can't chip, crack, or break. In some cases when diamonds are cut, initially, by hitting it and cleaving it, you hit along certain grain lines and the diamond tends to break. Yes, it can break.