I've made this triple band ring using 1.5mm thick silver wire.  I've hammered it, and set it with a gorgeous 2.5mm white diamond.  
 
This is a UK size N 1/2, or US size 6 3/4
 
Hallmarked at London Assay Office to prove it is made of the metal stated. 
 
One ring supplied, gift-boxed.
 
If you have any questions about this piece, please drop me an email to lydia@niziblian.com