1 can be identified by its weight. Because the density of jadeite is relatively high, its weight will be heavier than that of ordinary jadeite. You can bring a fake jade in advance and measure two jadeites of similar size in your hand. If you think the jade in the jewelry store is heavy, then this jade may be the real jade. If you think the two jadeites are of similar quality, then this jadeite in the jewelry store may be fake.

2. We can judge that jadeite is a kind of jadeite by its hardness, and the hardness of real jadeite is obviously higher than that of fake jadeite. We can try to scrape the surface of jade with something sharp. If it is real jade, it won't leave scratches. If it is fake, it will leave obvious scratches.

We can take a magnifying glass to the jewelry store to measure the section of jade. For jadeite with cutting, we can observe it with a magnifying glass, and there will be obvious irregular satin at the cutting place of jadeite, which proves that jadeite has changed for thousands of years. If the irregular broken line at the cutting place is not obvious, then this jade may be fake.