The difference between magnifying glass 10 times and 30 times is the problem of focusing imaging. It's not that the bigger the magnification, the clearer what you see, but that it depends on its imaging. However, a magnifying glass of 10 is enough to identify jadeite, while a magnifying glass of 30 times is used as a microscope for medical treatment. Through the above introduction, I believe you already know where the gap is. I don't know. Do you understand the difference between the two?