Probably. But this is a poor use of a diamond. If you want to break a mirror, most any object pushed or pitched against it will break it.
It is bad luck to break a mirror. There is no not bad luck in breaking a mirror.
Then
When you scratch a diamond against a mirror, the diamond's hardness will typically cause the mirror to scratch instead. Diamond is the hardest natural material, ranking 10 on the Mohs scale of hardness, while glass (of which mirrors are made) ranks around 5.5 on the scale, making it softer than diamond.
No
Diamond cannot break.
diamond it is the only thing that can break a diamond is a diamond
If lightning strikes a mirror, it will vaporize much of it, and shatter the rest.
A diamond fracture is a break or a crack in the stone.
No, diamond cannot break obsidian. Obsidian is harder than diamond on the Mohs scale, which measures the hardness of minerals. Diamond itself is the hardest natural material, but it cannot scratch or break obsidian due to its unique molecular structure.
It slows down. Or, if you meant "break" a mirror, it is in two or more pieces.
The break in a diamond is known as a cleavage. It refers to a fracture that occurs along the diamond's crystalline structure, causing it to split along specific planes. This can impact the diamond's durability and value.
No, a diamond will not break from extreme cold. However, a seriously flawed stone may break anywhere, at any time, under a variety of conditions.