Vintage Molded Glass Cameo with No Setting

Vintage Cameo that was made in the first quarter of the 1900's..
It was once set in a 14k gold setting, but the previous owner sold the setting to be melted.
This cameo is glass, made to look like a rare left facing sardonyx piece.
Measures 1 1/8" x 7/8".
Very nice quality.
Weighs 6.1 grams.
It has not been cleaned and needs it.