I agree with, Chuck. Lots of reflections and so much enlargement causes a loss of detail that makes it looks more like a planet than a marble. Its near 20X actual size on my screen. If you have a good pic, 5X is fine and anyone who wants to enlarge it easily can - just some thoughts. This pic is reduced to 30% of the size you posted and I like it much better.
You look like Kilroy in this pic! lol