Little Gem Girl Mexican Opal Dragons Breath Fire Glass Amulet Pendant Color Changing Necklace in Antique Silver Charm Mexican Fire Opal Dragon's Breath glass cabachon - Colors shift from lightening strikes of blues to scarlet red depending on how the light hits it The flashes of color from within the stone are known as the "breath" from which the name is derived. Mexican Opals were first used in jewelry in the early 1900s to simulate fire/jelly opals. Highly collectible and rare  this lovely stone is a certain conversation piece and will become a cherished favorite. Oval Vintage style metal necklace pendant with 24 inch link chain with lobster clasp Comes with an organza bag - ready for gift giving! Handcrafted in the usa by Little Gem Girl