If inspected intently with magnification, a lab diamond expert would perhaps manage to explain to the difference between an HPHT plus a CVD diamond by investigating the crystal structure. Now we have a useful ring sizing guideline which you could print! You can also question your companion for their measurement, https://etsylabgrowndiamondstud54321.pointblog.net/a-secret-weapon-for-etsy-diamond-earring-68998313