Vintage Blue Glass/Ceramic retail Oval Cameo RARE Greek Scene

Product Name: Vintage Blue Glass/Ceramic retail Oval Cameo RARE Greek Scene
Vintage Blue Glass/Ceramic Greek Scene Oval Cameo. The frame is a golden bronze color, I don't know what kind of metal it is, there are no markings on it. After putting it out on GEM app this is retail the response I received: "I believe this to be a scene of Athena being born from the forehead of Zeus after Hephaistos splits it open." Although I was told they were mass produced and I have seen the blue glass cameos before this particular scene seems to be quite rare. I searched everywhere and cannot find another one like it. Any additional comments or information would be greatly appreciated. Preowned with normal wear overall very nice condition. The frame is showing gorgeous natural patina. Stone looks to be in great shape with no cracks.