The opal luxury stone sample comes from the associated stone in the Coober Pedy gemstone mine in Australia. It is Australia's national gemstone and is famous for its special color-changing effect. The English name of Opal is Opal, which comes from the Latin Opalus, which means ''the beauty of gemstones in one''. The ancient Roman natural scientist Pliny once said: ''On a piece of opal stone, you can see the flame of ruby, the color spots like amethyst, the green sea like emerald, colorful, integrated, and beautiful.'' Luxury stone is a rare luxury stone variety formed by mixing opal gem crystals and rock formations. Because it contains opal crystals, it also has color-changing properties. Under certain circumstances, it can show the sense of ''romantic sapphire'', ''warmth of amethyst'' and ''purity of white crystal''.