Early Victorian Foil-Back Amethyst Earrings

14k yellow gold beautifully textured frames sit two rose-cut faceted amethyst stones. These stones are foil-backed, meaning there is a thin sheet of silver foil that sits behind the stone. This was a common practice in the Georgian & Early Victorian era jewelry, typically to bring more "light" to a gemstone set in a closed-back mounting
 
Antique, Circa dated 1870