Enamel Inlay/Sterling Silver Pendant/Brooch/Earrings Set

Enamel inlay/sterling silver pendant-brooch and matching earrings. Fabulous MCM design with a pop art vibe. The mosiac inlay appears to be enamel but it looks like stone. Each piece is signed and stamped 925 on the back. I am not familiar with the signature. The large pendant-brooch has a large bale on the back as well as a bar pin and measures 2" x 1" Includes an 18 " silvertone snake chain with a lobster claw clasp. The matching earrings are post backs for pierced ears and measure 1" x 1/2" I wish I had more information on these delightful pieces of jewelry. Pre-owned, excellent condition.