Mexican fire opal natural polished sterling silver artisan split shank large ring size 10 silver and blue Stamped sterling on the hook

Stamped sterling on the hook

Acid tests positive for 10k and sterling silver

Blue Aurora borealis molded glass leaf rhinestone mid century vintage brooch

Split shank fully textured ring band

Acid test positive for sterling silver

Mexican fire opal natural polished sterling silver artisan split shank large ring size 10 silver and blue Stamped sterling on the hookMexican fire opal natural polished sterling silver artisan split shank large ring. Good used condition with little to no signs of normal wear. Split shank design. Stamped on the inside of the band 925 with an unidentified hallmark. Very large high set prong set tumbled opal. The colors dance inside the opalescent part of the stone. There is a small quartz pocket on the bottom edge of the stone. The edges have been left natural with a highly polished