Gray Diamond in Sunlight

[kelmel]

What would make a VS1, G in color, triple ex diamond appear gray (instead of bright white) in sunlight? Are the prongs (6) being reflected in the stone? The GIA report states there is no fluorescence.

 

[yssie]

[URL='https://www.pricescope.com/community/threads/why-does-my-diamond-go-dark-in-the-middle.156211/']https://www.pricescope.com/community/threads/why-does-my-diamond-go-dark-in-the-middle.156211/[/URL]
[URL='https://www.pricescope.com/community/threads/why-does-my-diamond-do-this-dark-in-sunlight.37481/']https://www.pricescope.com/community/threads/why-does-my-diamond-do-this-dark-in-sunlight.37481/[/URL]
[URL='https://www.pricescope.com/community/threads/why-does-a-diamond-go-dark-in-direct-sunlight.132751/']https://www.pricescope.com/community/threads/why-does-a-diamond-go-dark-in-direct-sunlight.132751/[/URL]
[URL='https://www.pricescope.com/community/threads/why-does-my-diamond-look-so-different-in-store-lighting.154338/']https://www.pricescope.com/community/threads/why-does-my-diamond-look-so-different-in-store-lighting.154338/[/URL]

 

[kelmel]

Thank you!