Vintage Blue CAMEO Post Earrings

I was gifted these Lovely Cameo Earrings about 25 years ago. Never put them on. They are in their original box from "The Museum Store Newport Rhode Island" The box is worn but functional. No stamps or markings I believe they are Gold Tone Plated Brass and the Cameo is probably Resin There are 8 tiny pearl like beads around the edge of each earring, dainty looking Size is OVAL 1 inch x 5/8 inch The Logo on Box states: "PRESERVATION SOCIETY OF NEWPORT COUNTY MCMXLV (1945) In 1945, the Preservation Society of Newport County was founded to save Hunter House from demolition. The society is a 501(c)(3) nonprofit organization that protects the architectural heritage of Newport County, Rhode Island. How it was founded: Katherine and George Warren led a group of Newport residents to form the society The group was originally called the Georgian Society The society purchased Hunter House and formed in 1945 What they've accomplished: The society has saved and restored many historic properties, including Hunter House, The Breakers, The Elms, Marble House, Chateau-sur-Mer, Kingscote, and Rosecliff The society operates 11 properties for visitation, including seven National Historic Landmarks The society's work includes restoring roofs and windows, conserving textiles, and cleaning paintings How they raise funds: The society gives public tours of The Breakers The society has received donations from individuals, including Gertrude Conaway Vanderbilt