I recently gave my fiance an oval engagement ring with a micorpave a setting. I''m a little confused, becuase in the normal daylight the stone looks really pretty and it has a very mininal bowtie, that isn''t even really black, just kind of a greyish looking line going across the width of the diameter, through the center. But at night time or in limited light at certain angles the grey line turns black. I''m thinking it is just becuase of the abesence of light, but i am not really sure. I am wondering if there is something internally wrong with the diamond. I have never really heard of one doing this? the dimensions are below. I did a lot of research and the only thing really wrong in my opinion is the girddle, but no diamond is perfect. The inclusion are off to the side and when i got a second appraisial, i was told it could really pass for almost a vs2, so i don''t think it is the probelm.
10.07 x 6.79x 4.23
total depth 62.3
crown height 15.5
polish and sym are both good
girddle -medium to extremely thick