Retouching to make them sparkle
When photographing shiny reflective objects is particularly tricky. You don't want to capture yourself of the camera in the reflection, nor do you want the object to be blurry.
So you must outline the shapes and be selective where you're going to blur some areas and add a color sweep.
And what about the dust? Hours were spent zoomed into the photo to retouch out all the little specs and fluffs of dust. It's almost impossible to see with the naked eye, but with today's technnology, we can find a needle in the haystack within seconds.