Thoughts on the OMC studs?

[jfmiii]

K color, SI2/SI3 clarity
5.13 - 5.82 x 3.77mm
5.03 - 5.79 x 3.89mm

claims to be eye clean. Here are some pics. These would be for my fiancee as a wedding/30th bday present and I could always get them remounted....

 

[ecf8503]

Who says they are a K SI2/3? Are they GIA graded? Honestly they look warmer than K color, and I'd be very leery of that clarity grade.