However, into the high temperature water, high temperature easily make the crystal has a large crack or fade, resulting in unnecessary damage. Amethyst jewelry should avoid high temperature and heat radiation, in order to maintain the color and luster. Crystal ornaments should also be avoided in the sun exposure or direct sunlight to prevent fading. Put in the jewelry showcase in the crystal can be used as direct light long time, otherwise the water bile crystal may dehydrate, color crystal will fade.