? Please note that we will ship you same stone or exact similar stone with same color, clarity same carat weight certified stone. All Our Diamonds Are Certified And Laser inscripted. all of our diamonds are tested and certified with labs like IGI, GIA ,Etc. Lab IGI Report # - Shape Emerald Carat 7.11 Color H Clarity VS1 Cut - Polish Excellent Sym Excellent Fluor None Location New York, United States Depth 67.7% Table 67% Girdle Medium Crown 13.0%, 36.3 Pavillion 51.5%, 39.4 Culet Large Meas 12.59 x 9.28 x 6.28 Ratio 1.36 BGM None Growth Type CVD Please note that we are listing all of our stone's color clarity grade as per IGI Lab Report. IGI Lab is the 2nd most reputable trustworthy Lab after GIA. Every person can have a different opinion about the color clarity of the stone. So the stones you are getting can be h to j in color vs1 to si1 in clarity grades as per GIA standards but as IGI standards those are as mentioned in the listing. how practical it is to use $75000 (3 Carat E VS!) Natural Diamond stone standard for the same color clarity grade (3 Carat EVS1) Lab Grown Stone which you are getting for $750. My advice to you is whatever authenticity says please please get the stone if you do not like then I will accept the return without any question in the next 30 days of purchase. I don't want you to miss the great opportunity to buy those beautiful lab grown stones which are 100% the same chemical other properties wise as natural Diamonds at 1% of price compared to Natural Diamond.