I just added this related comment:
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.
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.
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