Warm Tips: 1. Please avoid contact with acid and alkali, corrosive substances. 2. Please avoid the collision, so as to avoid surface scratches. 3. Please avoid wearing it when sweating a lot, showering or sleeping, etc. 4. Please wipe them with a soft cloth when you clean your jewelry. History: Opal, which comes from the Latin opalus, means "display all kinds of gem stones' beauty ." Roman naturalist Pliny said: "In one piece opal stone, you can see the flame ruby, amethyst-like stain, like an emerald green sea, colorful, seamless, beautiful." Opal 95 % of its origin is produced in Australia, and in North America Mexico, South America, and Brazil also have opal.