Can you get a crack inside of a diamond when installing it into a ring?

When they are installing a diamond on the ring, can you get a crack or break inside the diamond? When we purchased the diamond there was no visible cracks inside the diamond. After installation when we got the ring, we saw a visible crack which could be easily seen with the naked eye. Could anything have happened to the diamond when they made it into a ring? Do they use a torch or something?|||It's possible to break a diamond because it is a crystal. A caracteristic property of pure crystalline solidsis that they form a well defined crystal with a smooth flat surface. When a sharp force is applied to a crystal, it will most often cleave to give smooth flat surfaces.|||I am sorry to argue with the last answerer but diamond has very marked cubic cleavage, without this it would be impossible to cut. Although diamond is the hardest natural substance in the world it is not very tough and can break with little trouble.


It is very possible for a stone to be damaged while it is being set as the claws used to hold it in place are pushed down very hard by the setter, hard enough to extend a small cleavage crack into a visible flaw or to create a crack if there is any internal stress within the stone. Without having seen the stone before and after it is impossible for me to even make an educated guess as to what has happened. It is also possible that a mark you did not see when the stone was unmounted may have become visible due to light being reflected from the metal of the setting, in particular from under the claws.


I regret that without having a receipt from the jeweller saying that the stone had no visible faults when he took it in you are fighting an uphill battle, but good luck anyway.|||Highly unlikely unless the diamond was damaged before it was installed in the ring. They could have possibly made the defect worse.


Diamonds are made up of a single element and only one kind of bond (a really strong one at that), therefore, they do not have have any preferred direction of cleavage. This lack of preferred breakage is what makes them so durable/hard.


I don't know if they use torches for the setting, but I do know that to set them they would just put the diamond into the setting and bend the prongs to hold it in place. I don't see any way that they would break a diamond doing this. If there is any way to tell, you should make sure they gave you the right diamond. If you paid for a diamond without a crack in it, there is no reason you should have to live with one that has one.