These dynamic rings have such a great weight to them. They are made from thick sterling silver, formed, soldered and textured by hand, one at a time and I love them. The small version is starts at 8mm x 1.5 mm, the medium version starts at 10mm x 2mm and the large is a hefty 13mm x 2mm. Each piece of metal is then formed into a ring, soldered at least two times and hammered and annealed and hammered some more with a Fretz hammer (that hammer set is still my best investment!) until my arm gives out and it looks amazing. These rings are sized in whole numbers because they are so wide. I am happy to work with you to see if I can adjust sizing to give you a better gauge on the exact fit. Just message me - I will make the ring as ordered and I am happy to customize wherever I can. I hope you'll love them as much as I do. Custom sizes are available. Rings are made by hand, individually, and will have natural variations in appearance. Each ring is made to order and ready to ship within 10 days.