frazzlednpe

Other than moissanite there are also lab diamonds. I found this on lab vs earth diamonds https://blog.onetruerock.com/blog/LabvsEarth (scroll down for the crazy graph for the price difference). Overall they seem to share lots of analytics on the diamond market.

After a discussion with my fiancee I did end up finding a earth/natural diamond(I know). I did end up using the same site to help me find a good deal and seemed to save a chunk of change.