Natural Lapis Oval Signet Ring

This item was made by genuine 925 sterling silver and with a natural lapis stone on the top. the ring top width is approx. 14mm and the lapis size is approx.12mm. 

What standard are those ring sizes listed above?

1. all our store ring sizes are in US standard.

2. if you don't know your US size, kindly refer to the page of "Ring Size Table"on the bottom, please.