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 Post subject: black diamond?
PostPosted: Fri Sep 21, 2018 9:25 am 
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I have this very impressive black stone can sobody check if
it's a black diamond?
Thank you!


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 Post subject: Re: black diamond?
PostPosted: Fri Sep 21, 2018 3:44 pm 
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No, definitely not. The glassy conchoidal fracture suggests it is glass, likely industrial slag of some sort.

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 Post subject: Re: black diamond?
PostPosted: Fri Sep 21, 2018 3:50 pm 
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Yep, I concur.
Glass, most probably manufactured slag, with a very remote possibility that it could be obsidian.

Not a diamond!


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 Post subject: Re: black diamond?
PostPosted: Sat Sep 22, 2018 4:20 am 
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Thank you very much for your opinions!


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