The gorget looks good, and the sharpness is excellent. The image would benefit from a bit more fill flash IMO; it's a little dark as presented. I might crop some off the right and the top of the frame.
My very first impression, before looking at Doug's comments, was that the image is too dark. I think more fill would have helped, esp. with the colors. I do think you might revisit your raw file, and try a bit more exposure compensation to bring it up a bit.
Here is a very quick touch up. Bit brighter and recropped a bit, something like Doug suggested.
The red channel is right on the ragged edge, so didn't want to go any brighter. I could have desatted that channel and pushed the overall brightness higher, but thought this was a useful improvement, IMHO.