Vintage Textured Pendant Convex Shaped Fillegree Scarf Ring Rustic Boho

Vintage Textured Pendant Convex Shaped Fillegree Scarf Ring Rustic Boho Heavily oxidized but structurally solid. I’m unsure what the stone is at the front of the pendant; or if it is a stone at all. The “appearance” is that of a fire opal. PLEASE SEE ALL PHOTOS CLOSELY. Thanks for looking!