Vintage Designer Art Deco 10k Yellow Gold 3.5 grams Marquise Black Onyx Ring 6.5

Vintage 10k Yellow Gold Marquise Shaped Black Onyx Ring Sz 6.5 Marked 10k and makers mark Onyx is 15mm X 7mm 3.53 grams Overall ring is 20mm X 11mm Two tone I don’t know if the center had a diamond or if it’s illusion Designer signed Very old in vintage condition see photos This style of ring elongates the finger and looks great on any hand.