If the price of gold plunges one day, it should already plunge today. In other words, the probability for success of those mining operations is low.
Futurology
Why should it already plunge today? The demand/supply is still the same.
But it will not be the same when asteroid mining increases the supply tenfold.
True if used in production. But it's used to store value. If I know gold will be worth 50% next year, I am not willing to pay full price today if I want to resell it then.
Careful there, you'll trigger a lot of gold worshiping tryhards
Are they able to lab grow the same kind of gem quality diamonds that you usually think about when it comes to jewelry, or is it still mostly industrial applications (such as diamond tipped drill bits)?
It is the blood and slavery that make natural diamonds so valuable /s
Lab grown diamonds are much better quality than natural diamonds. So now natural diamond companies are moving to the "imperfections is what make a diamond perfect" strategy. But nothing's stopping labs from growing diamonds with imperfections if that's what the people are after.
All in all, diamonds have always been mostly a scam and it's showing more and more.
The rocket equation wants to have words with you.
If one day there are folks mining asteroids for gold they will not be humans as we will make ourselves extinct before that ever happens.