I operate with a working assumption than 80% of economic activity is stupid people freely handing their money over to smarter people. Brand-name handbags, sticker-price new cars, bottle service at night clubs, consumer credit at usurious rates, etc. Stupid people cannot wait to light their money on fire, and smarter people are right there to hand them a match.
One such instance that I marvel at is the habit of stupid people to spend several months' wages on an engagement ring that could not be resold for anywhere near that. How fucking stupid are you goys?
Point being, who is behind the diamond racket? Is it the obvious answer?