[podcastmaker (OP)]

Diamonds are well hard aren't they ?

[evan_au]

Yes.

When Moh developed his hardness scale for rocks, he used similar proportions between successive steps of his scale.
- But he had nothing in hardness between carborundum (9 on his scale) and diamond, so he gave diamond the next number (10).
- In fact, diamond is far harder than carborundum, and deserves a hardness number somewhere around 20.

See graph at: https://geology.com/minerals/mohs-hardness-scale.shtml

[chris]

diamond is far harder than carborundum, and deserves a hardness number somewhere around 20.

Wow; that blew my mind. I had no idea it was such a big jump...

[adamsmitt]

Hi, I also heard that they are super strong but they have one drawback they are fragile as I know.

[pensador]

Hi, I also heard that they are super strong but they have one drawback they are fragile as I know.

Not unless they are fakes