for clarity, i feel VS2 is the minimum. then again different diamonds have inclusions at different spots. a VS2 diamond with side inclusion may look better than a VS1 diamond with centre inclusion.
yea me too think VS2 is good enough.
to spot smaller inclusions with naked eyes could be difficult - must use a 10x loupe/magnifier looking out for any visible blemishes such as black spots, scratches, chips on girdle, etc.
for >1 ct diamond (GIA diamond grading report), there is an image of the diamond clarity characteristics which shows where the inclusions are. so can use that to check against the actual diamond.
types of inclusion:
Where did he propose?
oh well, if in public i think i will be very paiseh also.