Thanks for you for all the advises guys! I did some digging...
1) She wants the diamond to cover about 50-75% of her finger
2) Doesn't like too fancy design but dont want it too boring either (this is a very vague.....)
3) Must be very sparkly - I assume this is to do with the cut
I read JP's blog and saw that there is different types of cut. Super ideal cut, Solasfera, Octagon, etc. Are they just different shape but same quality? Or different quality? Is the Super ideal cut meant to be the best?
Sorry for the many qns