Gemologist says it's eye clean, so I'll have to take his word on it (fingers crossed)
After taking a look at one of the wiki's that shows 1ct in 10x and actual size side by side,
I realize it's pretty tough to see flaws with the naked eye unless you have multiple conditions
1) right near the surface
2) right lighting
3) know where to look
4) rocking the stone
I'm able to focus around 6,7" and a bit obsessive, so I hope I cannot spot anything.
I hate to return an online purchase this nice.