The last image is the opals under UV light.

         This VTG Mexico 925 Taxco Silver Lab Made Fire Opals Inlay Hinged Bangle Bracelet is a unique and handmade piece of jewelry that features an asymmetrical design with a slide closure. The bracelet is crafted from sterling silver and inlaid with six lab-created fire opals. The multicolor fire opals add a vibrant touch to the piece, making it suitable for all occasions. Made in Mexico by the brand Taxco, this vintage bracelet is 7 inches in length and showcases an original design with a bezel setting. Perfect for both men and women, this bracelet is a stunning addition to any jewelry collection.