It is A beauty! I took pictures with flash on, flash off and in window under natural sun light. It's so hard to capture the absolute beauty of this ring on camera!
I think it is possible. But because it's not solid gold most jewelers aren't going to want to mess with it. If you need this ring to be smaller, I've heard of these spacer things that attached to the inside of the ring that can make it fit. A lot cheaper than having the ring resized!