This ring is one of my favourites but, try as I might, I've never been able to make one that fits me comfortably. I'm not sure what era it's from, but I think it's from the early 1990s, when Ivaan was experimenting with rings and bracelets that were folded over at the base, and were therefore next to impossible to duplicate.
Despairing that I would ever have one of these to wear, I once made a mock-up of it in heavy brown paper, took it to my milliner, and she made it into a hat for me. It's an excellent hat, and I wear it often. That scorpion tail flourish on the right side of the photo is a peacock feather on the hat.