Pokeball perler bead creations made into rings. Each one has a small rhinestone in the middle, where the release button would be. The insert (bottom-right) shows the back/ring-base.
Ringbacks are silvertone and fully adjustable.
These will be for sale in my Etsy shop and at Anime conventions around the midwest (USA) this spring.
The perler patterns I use are either from in-game sprites, modified in-game sprites, or found on Reddit.