Hi everyone! I bought a pair of diamond studs from a respectable jeweler in town, on the GIA report, the diamonds are listed as F color SI1. However when I look at them in normal day light, sometimes they seem a bit yellow but sometimes they seem really white. When I put them on a piece of white paper, they are sparkling white but when I turn them side to side, they look a bit yellow. Is it just the reflection and the shine that''s confusing me? I don''t really want to take it apart in order to read the laser script. and I checked both GIA reports are genuine. This is my first time buying diamond, so i hope I can get some feed back from you guys! Thanks!