I was able to retrieve this pic from an old e-mail.
A lady was asking whether I had a black stone to make a ring, and I did use the rough of the ring previously posted, at a very early stage of my work (just the scratch you can see above the hole and the vertical groove along the bottom of the ring) as a makeshift stand to display a mineral specimen.
It may illustrate what comes from the goldsmith, for me to work with.