Which hand should I take for the white crystal and the black crystal?

China has a saying since ancient times that everything that brings you good luck is left-handed, so that good luck can enter. Up to now, only black pharmacists have to bring their right hands, because they are used to ward off evil spirits. In fact, it is no problem to put a few crystals together, but don't change them often, because crystals will affect the magnetic field of human body, and changing the magnetic field often will become disorder, which is not good for your health. Basically, you can choose the crystal you need to wear. Hair crystals are all good luck. White crystal is called crystal king, which has many functions, but it is not very expensive. Generally, you can buy very good white crystals around 50 yuan. Hair crystal is more expensive, but how expensive depends on the grade of crystal. It is recommended that the crystal be purified before wearing. As for how to purify, you can search for "purifying crystals", and there will be very detailed steps ~