Emerald is a high-grade gem, and its value mainly depends on its quality, origin and production technology. Therefore, when buying jade, you need to choose carefully and try to choose regular jewelers and channels to buy it.
In addition, I didn't find any information about the brand Bo Gu Ya. Therefore, if you want to buy jade, it is recommended to choose a regular jeweler and a good reputation channel to ensure that you can buy real jade.