I had this ancient Roman glass disc  Karen sent me for some time but wanted to give it a wondrous, unusual setting, and which better setting than an unusual Huge ring!!! Statement indeed, Roman Glass has an industrial modernist brutalist flair, a sculpture itself that holds in heavy copper with a wide adjustable band, an amazing piece of human history. (I may make some silver rings with ancient glass for the people allergic to other metals but remember, I don't do custom work. This is and always will be the Only One of its Kind. )
I will add more pictures at the blog to give a more powerful view of it, but let me tell you, it is Bold, strong, wild. 
Adjustable, the wide band will keep it in place gracefully.