They're made from cover buttons which are glued with hot glue on to ring blanks. As long as you keep your fingers away from the hot glue, it's a fun game!
Then I took some earrings which I'd got on sale - I think from Matalan?? - and cut the stalks off using pliers. (Yes, I was watching Wimbledon on my iPad at the time.)
Then I used more hot glue to stick them on to kirby grips with pads on them.
Next I made some more kirby grips with covered buttons and a ring and a pair of stud earrings.
The earrings were made with a smaller size of cover buttons - 11mm. (The ones I used for the rings and kirby grips were 15mm.)
These are a great way to use the tiniest of pieces of fabric from my scrap boxes which I can't seem to make myself throw out. I think I could make them for the next 10 years and I still wouldn't have used up all the scraps! :oD