Earlier quoted context omitted.
Wife and I had read the Atlantic article before it was too late, went with plain wedding bands for both of us. However, living in America, this is causing issues for her, continuously having to explain to friends and acquaintances why she does not have a diamond. We'd been looking for used rings as an alternative - hence, thank you very much for writing this, you just saved me and my wife several thousand dollars.
Is this really a thing in the US? In Italy (and AFAIK in most of Europe) wedding rings are normally plain gold (rarely white or red gold, or platinum) bands. Engagement rings do have a stone, but they are not worn every day.
In Sweden at least it seems to be quite common to wear both rings. However it also seems to be more common to have inset stones, rather than one that sticks out. I've also seen several people who buy the engagement ring and wedding band together as a matching set to make sure they work together. (something which to me always felt rather presumptuous)