[aggie]

Finding a life partner is not easy. I suggest not adding "must be ok without a diamond ring" to your criteria. Also, communicate beforehand rather than taking a stand on an issue she will literally wear for life and expecting her to accede.

I say this as someone who likes the idea of moissanite, but relented to getting an "ethical" diamond from Canada (there is some dispute about provenance of these diamonds).

In other words, this isn't a hill to die on.