Not all lab grown diamonds are the same though. From what I read online, main problems with lab growns right now is that many new diamond growers are rushing into growing them and shortcuts in the process. This creates bad quality lab diamonds and can many issues like off hues and stria. I think the more common problem is stria. It makes the diamond look fuzzy from the many ''growth lines?''. It won't be obvious in jewelry shop lights btw. It's only when you see it in softer light settings. This is a good read on problems of lab grown diamonds to avoid -
https://www.diamondscreener.com/edu...o-look-for-when-buying-a-lab-created-diamond/
That's also why all these sellers are certifying these lab growns in IGI certificate, which is a really crap lab. I would only stick to GIA or AGS. I hope yours is not IGI. Like I see the ones from Micheal Trio are all IGI.
Another point to consider is the difference in the Cut. JP's ovals are the oval hearts and arrows. The other ovals you're comparing against is the normal oval which looks very different (you see the oval video from the earlier post). Normal ovals have alot of light leakages (no hearts & arrows). I think you're might be confusing that all oval cuts are the same.