I spent a couple of hours playing around with bright-field lighting and dark-filed lighting this afternoon.
One of my more interesting experiments involved a couple of Glencairn whisky glasses. the front one was inverted and the back one was right side up. Both were sitting on a piece of black Plexiglas. I had a small soft box as my background and light source, which was flagged with a couple of pieces of black foam core to control the light hitting the lens.
I still have some more work to do to perfect this lighting, but the start looks promising.