Can they? Diamonds are a practically useless product (except in science and the industry) based only on the social signalling [0] they give to their owner. And

Can they? Diamonds are a practically useless product (except in science and the industry) based only on the social signalling [0] they give to their owner. And this signalling is due to their high price.[1] De Beers created the demand artificially for engagement rings so they are pretty much done,I guess. [0] https://en.wikipedia.org/wiki/Signalling_theory https://en.wikipedia.org/wiki/Signalling_theory [1] https://en.wikipedia.org/wiki/Signalling_(economics) https://en.wikipedia.org/wiki/Signalling_(economics)