I just added this related comment: https://news.ycombinator.com/item?id=13089809 https://news.ycombinator.com/item?id=13089809 TL;DR They have very similar cos

I just added this related comment: https://news.ycombinator.com/item?id=13089809 https://news.ycombinator.com/item?id=13089809 TL;DR They have very similar cost structures as mined diamonds (rough [mine vs. grow], polishing, grading, etc.), plus the R&D and failure/success rates.