1960s Sarah Coventry Mosaic maltese brooch and earring demi parure.  Mottled red and green  domed cabochons with round red acrylic/plastic  balls set in a twisted goldtone metal rope. The back has a goldtone textured finish. The pin measures 3" x 3" and the clip on earrings measure 1" x 1".  Unworn condition.
 
This desirable set can be seen on page 89 of "Collectible Costume Jewelry" by Cherri Simonds.