What are these please?

[autumnclover]

I want to make my friend one, her birthday in a week! PANIC can't find the ring blanks anywhere? What are they actually called and where do I get them?

Please please please help me!!

Thanks in advance! 4666

[mizgeorge]

http://www.resin8.co.uk/product.php/100/sterling-silver-ring-mounts

Or you can make them with a ring band and a couple of washers!