Artisan Made Solid Sterling Silver overlay Ring with Turquoise Inlay "R" Initial

One of a kind vintage artisan made sterling silver ring. It was made with the overlay technique. The band is 3 layers thick and the face is more. It has some silver blocks inside that you can see from the side, I would guess it to be 5 to 6 layers thick. The face in channel inlay set with fine blue turquoise. It has the initial "R" in the design. 

Due to the shape of the ring it is hard to figure size on a round mandrel, but I would estimate it at a size 10. Face measures just a little over 5/8" wide. It weight: 25 grams. It has no hallmarks. It has been acid tested.

"R" must be for "Rustic"