Reserved - Vintage Jumbo Sterling Silver Ocular Eye Agate Eye Ring Artisan Made

I’ve had this for a while now. I haven’t done much research on it. I’m listing it at a price without doing research. It’s definitely vintage. It’s hallmarked with initials, as well as 3 other hallmarks I can’t read without a loupe which I need to find. My guess is they’re European of some kind but I’m not sure. The agate resembles an eyeball so it’s on the rarer side. I took some super close up pics so you can see the stone and its striations, as well as hallmarks. It’s got some grayish purple and light brown hues to it. Im not sure if it’s a doublet. I have not polished the silver. I can if you’d prefer such but many don’t so I usually leave to the buyer. Appx size is 8.5 to 8.75 on my mandrel. The circumference of the face of the ring is just shy of an inch.