Vintage necklace and earring set. Has mark N R

This beautiful jewelry set is vintage Avon, mark on back of pendant is N R, it was designed by Nina Rocco. It has abalone in the center of the pendant, surrounded by sparkly clear stones. The earrings are abalone with a clear stone above. The gold tone chain is 20”, including a 3” extender. The set is beautiful, I hope someone will appreciate it.