Good contrast
In this instance, her face would have detracted from her jewelry.
Nice, there's a lot to like here. Great placement of lines and forms, wouldn't change a thing.
My only quibble is that a great deal of the blackness in the stones is coming up flat on my monitor. I'm willing to bet there's a little something in there in the print, though and in this case I think it's quite necessary. I am generally ok with flat blackness in shadows (shadows ARE holes, after all), but this is a Thing, and having the Thing look like a hole in space strikes me as uncomfortable.
