Red Coral Shadowbox Ring Sterling Silver Southwestern

Southwestern sterling silver shadowbox ring set with red coral. Hand stamp decorated. 

Size: 8 1/2

Face measures 1 1/8" x 7/8". 

The bezel has an area where it is missing. I am puzzled by this as it is protected by the shadowbox and though it looks damaged, I wonder if it was never there. In any case, the stone is in strong and tight. It needs to be cleaned and oiled. I oil my coral with just a little olive oil as it takes away that chalky residue. 

Weight: 10 grams. Tarnished. No hallmarks. Acid tested sterling silver.