Non applicable color or optical illusion

[ioannis]

Dear sir or maddame 2 days ago one little diamond came to my pawnshop..its included 1its color is id say i-j under white light of course and its strong blue fluorecence.strange think is that today under sunlight the diamond seemed to have a light purplish hue..and iam wondering could it be an optical ilusion due to the presence of ultraviolet light of sun or a non applicable color ...bellow i attach some photos which may help you understand what i mean...thank you all in advance..

 

[diamondseeker2006]

Dear sir or maddame 2 days ago one little diamond came to my pawnshop..its included 1its color is id say i-j under white light of course and its strong blue fluorecence.strange think is that today under sunlight the diamond seemed to have a light purplish hue..and iam wondering could it be an optical ilusion due to the presence of ultraviolet light of sun or a non applicable color ...bellow i attach some photos which may help you understand what i mean...thank you all in advance..

I maybe see it slightly from those pictures, but strong blue fluorescence can show as a slight purplish hue from the UV light from the sun. Some people mistake the blue reflection from the sky as fluorescence. But fluorescence is more of a slight lavender tinge.