Thank you very much to all of you for giving this a try. I kind of figured it was too bad. I was in too much of a hurry (not to mention nervous) when taking the picture. A time machine would indeed be great!
This particular shot (just to be clear, it's a double necklace, one of black beads one of lighter beads) is not even 1/10th of the entire photo, so it will be impossible to clone all the important parts, but that is definitely something I will keep in mind should something like this happen again.
Again, thank you very much for the kind welcome and your quick responses. I will keep checking the thread just in case someone comes along posting about their time machine. Or some new CSI-like algorithm that can fix this