Does indirect sunlight (indoors through window) damage crystals faster than we think?

[Bubbles]

Hello. I have my desk office right in front of a wall glass. Lots of bright light coming from outside. There I have my optic calcite sphere, it is of a high quality in terms of grade and looks.

There is never direct sun light, but there is plenty of day light that comes through.

I am not sure if I got used to it but feels like it sort of got a little big of fog as if I would have breath hot air over it. But is not that bad, in fact I think it might be just my impression.

I am actually unsure, might have been always like this. Hmm... Perhaps humidity in the air sometimes might also affect this sometimes, even though most of the times it is rather dry indoors as is winter.