F3 and still looks untreated (!) = no go for me. I suspect the price is terrific. Imagine what it must have looked like before the treatment.
Is F3 for emeralds like I3 for diamonds? Meaning it can not go any lower so it can be practically anything...?
My understanding would be that the F grades are for the level and types of treatments, whereas the IF - I3 for diamonds addresses the inclusions. But I could be wrong!
My understanding would be that the F grades are for the level and types of treatments, whereas the IF - I3 for diamonds addresses the inclusions. But I could be wrong!