Vintage carved jade pin, vintage pin with pearl accents, signed Karu Kaufman Fifth Avenue

Karu Kaufman Fifth Avenue
Green Carved Jade and Pearls
unable to determine if the center piece is genuine jade or not.
some wear,missing a pearl

Karu jewelry is believed to be the collaboration of Kaufman and Ruderman in 1940's, in New York City. Their jewelry was produced from the 1940's to 1970's.