2. Formation mode: Emerald is produced by spontaneous combustion, but it is polished by various processes and made into various works of art.. Coloured glaze is a kind of artificial gem, which is manufactured artificially by firing at a high temperature of 1000℃.
3. Origin: Jade, also known as "jadeite". More than 95% of jadeite in the market comes from Myanmar, so jadeite is also called Burmese jade. Besides the jadeite produced in Myanmar, other countries in the world also produce jadeite, such as China, Guatemala, Japan, the United States, Kazakhstan, Mexico and Colombia. Cele County, Hotan District, Xinjiang, China also produces a small amount of jadeite ore.