If diamond is the hardest rock on earth (and hard by definition is solid, firm, and resistant to pressure; not easily broken, bent or pierced), and it can break with a hammer
If diamond is the hardest rock on earth (and hard by definition is solid, firm, and resistant to pressure; not easily broken, bent or pierced), and it can break with a hammer
![Broken Mobile Screen and Hammer on Old Metal Diamond Plate or Old Checkered Steel Plate. Stock Image - Image of digital, display: 101254089 Broken Mobile Screen and Hammer on Old Metal Diamond Plate or Old Checkered Steel Plate. Stock Image - Image of digital, display: 101254089](https://thumbs.dreamstime.com/z/broken-mobile-screen-hammer-old-metal-diamond-plate-old-checkered-steel-plate-broken-mobile-screen-hammer-old-101254089.jpg)