Made it with Metal clay and it is fine silver. I've been looking for a ring like this for ages, but couldn't see anything I liked. So bought a book on Amazon and bought the clay (not cheep -won't be making many!!) and here it is. Sorry this sounds so big headed - I'm just so surprised I managed it!!
Yes, Stitch - to be honest, that is a good photo - it is well wonky, but I love it. I didn't carve it, I got a design mat that you push the clay into and the pattern is transferred onto the clay, then cut and stick together.
Thank you Void - lovely of you to say. May take this up as a hobby, but in copper rather than silver - just too cost prohibitive.