Can someone Identify this ring?

[Klinetry]

The engraving on the ring seems to say "ULTRA GEM ( S 250"

I would like to know possibly when this ring was made and maybe where it was made.

These are the images of the ring.

Please! Any information will be helpful!

http://postimg.org/image/6e7hxzzuj/

http://postimg.org/image/yad6oa8fv/

http://postimg.org/image/fnwn50783/

http://postimg.org/image/3vlsxbe4b/