Iridescent large vintage opal inspired bold blue green statement bib necklace

Brand is unknown Vintage from the 80’s to 90’s This is a Bib style necklace Faux opal in blue/green with sparks of gold and yellow It shines like Aurora Borealis Changes color when it moves and to light Chain in silver tone with extender Pre owned/gently worn/ great condition See photos for details and measurements Any questions please feel free to contact