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I'm not a scientist but surely theres a threshold density for diamonds that is far above rocks/living objects?



Density of rocks seems to top out around 3.2 g/cm³[0], but if you could find a way of scanning for material that was 99%+ Carbon and which had the density of diamond (3.51 g/cm³) and you could detect very small buried items, then that might be a start.

https://chem.libretexts.org/Ancillary_Materials/Exemplars_an...


> surely theres a threshold density for diamonds that is far above rocks

Nope, diamond is 3.51g/cm³, some rocks are in the same density range.


Diamond's density is 3.5 g/cm3, nothing special.




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