1. Glossy: Synthetic jade is made of jade powder and mixed chemicals by high-temperature and high-strength coagulant, with new color and uniform material, which is the biggest feature of this kind of imitation. The color of natural stone is shiny and natural. Artificial colors are bright, generally in a gray brightness state.
2. Hardness measurement: scratch with a knife, leaving no traces of real jade.
3. Observing with a magnifying glass, there will be no small bubbles in natural jade, which is determined by the chemical and physical causes of natural jade. Because synthetic jade is a mixture, which belongs to the crystal structure that is naturally formed by non-physical chemistry after high temperature, pressure and other technological processes, no matter how good the process is, there will inevitably be bubbles.
4. Listen to the sound: hang the jade with a thread and knock it with a hard object. Authentic voice is crisp and pleasant, and the aftertaste is melodious; The fake one is dull and dry.
5. Look at the fracture: with a magnifying glass of 10 times, the fracture of the real jade is uneven, and a fine structure can be seen; Fake jade articles have neat and shiny fractures, often glass imitations, while those with rough fracture structure and waxy luster are stone imitations.
Reference: Baidu Encyclopedia-Natural Jade