I'm all for synthetic, cheaply produced diamonds replacing all others in these scam markets. For example, the re-sale loss often encountered from selling on those old diamonds you find lying around the house is often a 25% to 50% haircut [1]. It's not some old rusty Nissan for goodness sake, it's precisely the same thing you bought previously, with none of its apparent purpose diminished in any way.

[1] - https://www.brightonsavoy.com.au/why-does-a-diamond-have-no-...