You've got a very nice shot here. Black and whiting it was a good choice. Personally, I might have softened the look just a little to make the hair piece look a bit more real. Using a high res camera means it picks up every detail, including the weave of the fabric on the flower. Here and there, I see tiny threads sticking out. A little softening would have made it look real. The clarity of the stone is nice, clean, and well detailed. I might have adjusted the framing just a bit though. The heel at the top of the shot is cut just a bit but since your primary focus looks to be the hair piece, it still works well.

Thank you for the great comment, I will keep that in mind.