The size of the crystal will still affect the efficacy. After all, the crystal mainly relies on the radiation frequency of the crystal to act on the human body. The more transparent the natural crystal, the better, but of course the more expensive it will be, so generally as long as it is natural crystal, it will be effective. The main effect of crystal is the influence of the crystal's own frequency on the human body. The frequency of crystal can make people quiet. When people are quiet, the body's regulating function is enhanced, thereby regulating mood and curing diseases to a certain extent. Of course, it also has its own psychological comfort effect. The following is copied (the crystal pillars inside the amethyst cave are densely packed, and the energy of each other has a strong cohesion effect. It can condense the righteousness in the house and improve the feng shui of the house. It is the best feng shui stone. Placed in the financial position of the home, it can avoid evil and prevent evil spirits. Gather wealth. ) The reason why I choose amethyst caves is because there are many amethyst caves. The ones I saw selling crystal caves in Donghai Crystal City are all amethyst caves. It must be because there are fewer others. There are also white crystal caves, which have impurities. Amethyst caves are generally real, and the cost of making a fake one is almost as high as the real one. Haha, of course some of them will be dyed in order to look good and sell for a good price.