It’s not really any different than usual dust, other than it is even more likely to scratch your phone (oh no!). The surprising thing is the bullshit price number, I’m sure it’s some brain-dead economist looking at the point-price for diamond and with great effort making a single multiplication.

Edit: The study does note industrial diamond manufacturing, but doesn’t go into detail on why it’s so expensive for diamond powder, other than saying “it would require much more industrial diamond than is currently produced”… Which is just… Empty? Considering industry would change to account for such a drastic rise in demand.