have been making beaded earrings from these, they're very sweet and my clients love them!
I used a couple of these larger rings in a necklace where I also used the matching antique hammered copper large bail made by TierraCast. The size of both the rings and bail look exceptionally well with the large beads that I used; the copper color is a rich medium dark copper and was perfect for the necklace done in autumn colors. The rings are a good weight...not flimsy. TierraCast products excel in quality.
I used these to hang charms from a girls necklace. They are thick, about 2mm, and hammered on both sides. They are small, but I was happy with them because they don't look cheap.