Thanks to all who responded!
Alma, actually, it doesn't need to be sterling; fine silver would
be... fine. And thank you for the info on which gauge of silver to
Ashley, that's funny, I'm pretty sure I checked the Rio Grande
catalog, but I better have another look! Right now I'm concentrating
on producing the artwork which is going to be set in the bezel cup.
Thought it would just be easier for now to buy them if they were
Brian and Jerry, thanks to you both for pointing me as well towards
RG (Jerry, thanks for the page number!). I will check the catalog
when I go to my studio tomorrow or day after.
All best to everyone!