Hello, amethyst bracelets can be matched with a white Wenchang pen pendant, so that's enough, or amethyst and white crystal bracelets can be mixed and matched. Blue sandstone is not recommended because it is an artificial product and has no effect. If you know more about crystals, you can play them without the date of June, 2458+0 1. I hope it can be adopted. Amethyst is wisdom.