Weighing jade by hand (usually an expert knows a thing or two by hand) has a high density, so it is actually heavier than it looks. If the jade you weigh in your hand is heavier than other jade of the same size and there is nothing wrong with it, then it is probably real jade. Of course, this method is not very accurate, but it is easy to realize and more scientific. In the past, jewelers often used this method to distinguish real jade from fake jade.
Density test (which requires some physical knowledge): Calculate the density. Jadeite and nephrite have a high density (Jadeite 3.3, nephrite 2.95).
Jade has a history of more than 6,000 years in China. Jade culture has a long history since ancient times. Jade identification still needs to learn more, watch more and accumulate some experience. Don't be fooled by profiteers.