Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: podcastmaker on 15/10/2020 09:48:44

Title: Diamonds are well hard aren't they?
Post by: podcastmaker on 15/10/2020 09:48:44

Diamonds are well hard aren't they ?

Title: Re: Diamonds are well hard aren't they?
Post by: evan_au on 15/10/2020 10:15:49

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

Title: Re: Diamonds are well hard aren't they?
Post by: chris on 16/10/2020 08:43:24

Quote from: evan_au on 15/10/2020 10:15:49

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...

Title: Re: Diamonds are well hard aren't they?
Post by: adamsmitt on 16/10/2020 12:04:33

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

Title: Re: Diamonds are well hard aren't they?
Post by: pensador on 17/10/2020 19:51:49

Quote from: adamsmitt on 16/10/2020 12:04:33

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