I am deciding between 2 diamonds. Both are beautiful in person and appear colorless, however one has florescence and the other has no florescence (FL). Both are Cushion cuts.
Here are the details
Weight: 1.71 Carat
Fluorescence: Medium Blue*
Weight: 1.72 Carat
Polish: Very Good
Symmetry: Very Good
As you can see both are very nice diamonds on paper. Both seem to have fire and great scintillation. I love #1 since it has more of a rectangular shape, however it has FL. Under UV light it is blue. I doubt my future wife will be by UV blacklights often, however historically has there been an issue with medium blue FL diamonds? Also being a "G" color they tell me it helps look even whiter, and I've also read this online. Do you have any recommendations between the two? Also if you have any feedback on the table/depths that would be great!!! Thank you!
Q1) If your wife never go outside during the day, then you’re fine. However, in sunlight, medium fluorescence will make your diamond look cloudy or milky.
Q2) Some shapes are better performers with light than others. Cushions would be in the low end of this group. If these are the only two diamonds available, I’d go with diamond #2. I can always recut it to a better shape and proportion, but I can’t remove fluorescence from a diamond.