Just the little ‘bead’ collection is to have the shiny bead as the detail to stand out the contrast.
The ring is matt-finished so the bead stands out to catch better light reflection. It is a design to make the ring more unusual than regular band. The ring is 1.8mm thick. It is a fun design to give the modern look. It is striking to stack 2 together.
To measure the ring size, please see the reference here.