There aren't any hallmarks.... Except a tiny "v" that might be hand engraved? The stone is red, cloudy... Almost see through, no bubbles. The band is gold, looks very antique, and it has on each side, 2 serpents wrapped around a pole with wings on top.... Holding the stone. It was passed down from masonic family members... And I've never been able to find another like it.
Not sure