Hi everyone. How much fluorescence does it take to get a diamond to look bluish in direct sunlight? I have a diamond that has been graded with "faint" fluorescence, but to me I can see cornflower blue to periwinkle in sunlight, depending on how I angle it. My diamond also goes dark in direct sunlight, but sparkles blindingly white and rainbow colors like crazy. I am trying to figure out how much of the darkness is due to fluorescence and how much is due to other factors. I am wondering whether I am really seeing fluorescence, or if I am mistaking the darkening for blue color, or even just seeing the reflection of the sky.
Thanks!
Thanks!