This seems to be more of an issue with rings than diamonds though ? Unknown quality ~6.5 mm second-hand lab-grown diamond : $0.8k : https://louped.com/lab-gro

This seems to be more of an issue with rings than diamonds though ? Unknown quality ~6.5 mm second-hand lab-grown diamond : $0.8k : https://louped.com/lab-grown-diamond114927.html https://louped.com/lab-grown-diamond114927.html High quality ~6.5 mm new lab-grown diamond : $1.2k : https://www.whiteflash.com/loose-diamonds/lab-created-diamonds/round-cut?carat=0.9,1.1&clarity=IF,SI2&cut=Ideal,Excellent&t=inhouse&advanced=yes&polish=Ideal,Excellent&lwratio=0,3&symmetry=Ideal,Excellent https://www.whiteflash.com/loose-diamonds/lab-created-diamon... ---- Crappy ~6.4 mm second-hand natural diamond : $3k : https://louped.com/gia-certified-round-diamond-114841.html https://louped.com/gia-certified-round-diamond-114841.html https://www.freediamondreport.com/report/lab/GIA/cert/5456398615 https://www.freediamondreport.com/report/lab/GIA/cert/545639... High quality ~6.5 mm new natural diamond : $3.5k-3.9k : https://www.whiteflash.com/loose-diamonds/round-cut?carat=0.9,1.1&color=D,L&t=inhouse&advanced=yes&polish=Ideal,Excellent&lwratio=0,3&symmetry=Ideal,Excellent https://www.whiteflash.com/loose-diamonds/round-cut?carat=0.... (Clarity doesn't seem to matter that much, because it has not much effect as long as it can't be seen to the naked eye, which in these except the worst one it probably won't be ? https://beyond4cs.com/clarity/ https://beyond4cs.com/clarity/ )