Andre motivated me to go back to ps, magnify to 200% and get cloning. I think this is much better - hopefully you won't be able to notice much difference unless you zoom right in:
Binnur - certainly in the earlier shots the flash was making a difference, I'm not so sure it was having a huge effect by this stage of the shoot. I also took several bracketed shots but the image presented here is from a single exposure. My initial global adjustments involved pulling the highlights down and boosting the shadows - the shadow adjustment really brought out the stones. The settings are below if anyone is interested - the boost to the overall exposure was mitigated with a grad filter on the sky and a slight vignette.
