Can diamonds really cut glass?
Yes, diamond can cut glass. As a matter of fact, diamond are over 160 time harder than glass. (As the hardest substance known, diamonds can cut anything.) However, if you are thinking of using this as a test to tell if a stone is really a diamond, then I would not recommend that you try it. There are a couple of reasons why this is a bad test. First of all, as Jennifer R wrote, there are many other things that many other things that are harder than glass. The other reason why this is not a good test for a diamond is that diamonds have cleavage (inherent planes of weakness within a mineral’s structure). Therefore, if you try to use a gem diamond to cut glass, you could chip the stone along a cleavage plane. So, not only would this not prove that you had a diamond, but you could damage the stone in the process. ********* “Diamond is 10 out of a possible 10 on the Mohs hardness scale.” Yes, it is. However, Mohs hardness scale is not a linear scale. When making the scale, Mohs basically pi
