I wonder what the second-order consequences will be. That is, people will still want to signal their commitment/ability to provide when proposing, so the drop in the price of diamonds won't necessarily reduce the overall outlay. Instead, it would shift the expense to another category (platinum or other expensive metals) or simply lead people to buy more carats (4 is the new 2!). In some ways, these moves could help l…
Will they? Why?
People getting married these days are far more likely to already live together, maybe own a house together. These sorts of signals to each other seem somewhat pointless. Especially as it's common for both partners to work, making it somewhat anachronistic for one partner to have this expectation on them.
This whole idea of stupidly expensive diamonds signalling commitment is just marketing bullshit, that has been so ingrained that people think it's somehow natural or necessary. If that's falling away piece by piece then that's something to celebrate.
Now the other form of signalling - "I am high status, look at my high-status shiny stuff", yeah that's not going anywhere.