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by SixSigma 3438 days ago
Coal isn't graphite though.

And you're talking about burning, not storage. Coal produces lots of dust and debris. I'm sure diamond would produce some dust at volumes.

https://www.quora.com/What-is-the-difference-between-coal-an...

Anyway, it's fantasy because I'm fairly confident we're not going to turn CO2 into mountains of diamonds in my lifetime!