Having trouble describing a ring

[sonofninasayers]

you know in my story Teenage baby I'm thinking about changing Amanda's dome ring to something else and here is the ring that I want her to wear. But I don't know how to best describe it. Here is a picture of the ring that I want to use

[cute baby katie]

what is the ring made from?

[sonofninasayers]

I'm not sure I think that it is plastic, but I could be wrong. Oh isn't there any mummies or sissies on here that can reconisie rings that know what the ring is and how to describe it. But all I know is that it is a dome ring