Those are Pretty Robert.
They are put in Shadow Boxes? That is different as you made old Jewelery still a piece of Art.
I hope that you have looked them over good before hand -- as hate to see some valuable piece from 17th, 18th, 19th century piece end up in there.
But that is JUST me, and the way I think. Are these costume Jewelery or Silver?
Very Nice......but I could not do it......lol.........as I guess I *hold* on to too many things