EUC gold-tone geometric modern necklace 16-18in

Cool necklace! Gold-tone, I assume brass but not totally sure. Some very slight tarnish as you can see in the zoomed-in photo, but it's not noticeable in person (I upped the contrast to make sure it was visible). 16in length with an additional 2-3 inch adjustable extension. Only very lightly worn. Still in excellent shape!