Vintage Carolyn Pollack Sterling Onyx Grape Cluster Necklace 20”

1980's-1990's.Signed with Carolyn Pollack's CP mark. This is on a 20" black laminated cord with silvertone extender chain and lobster clasp. The cord is newer than the pendant. The pendant has a bezel-set black onyx teardrop stone with an overlay of two grape leaves with stems and a cluster of grapes and at the base is beaded frame. The pendant is appx. 1.25" tall and 5/8" wide at the widest point. It tests as sterling and is marked sterling with a weight of appx. 3.35 gr. Very good condition, light oxidation that will polish away.