Unico rings. Each one is different than the others and I can't nor try to repeat them, on the contrary I let it go as it wishes and that's the beauty of them.
They have a base ring made with sturdy 14gauge (1.60mm), and then I wrap around 18 gauge (1mm) wire.
I solder the ends so they are secured, they are very comfortable to wear!
I'm really enjoying this, I hope you like them.
There are more than one at aroluna, check them out.