Vintage Cara NY Blue Borealis Cabochon Opal Blue Flower Brooch

Stunning brooch/pin and in very good vintage condition. See measurements. Colors include: greens, blues and gold. Opal or faux opal ? Study photos carefully as they complete condition and feel free to ask any questions. I see no rhinestones/stones/gemstones missing but center stone looks slightly off center. No returns/all sales are final. smoke free home. Thank you and I appreciate you taking the time.