Care Wash your jewellery now and then in water with a little soft soap (such as green soap). Use a soft toothbrush to gently clean your jewellery in the water. Then rinse with lukewarm water and dry with a flannel towel.
Silver can easily turn black on account of sulphur compounds. So keep it away from substances containing sulphur and chlorine. The black colour does not hurt the silver. You can remove it easily by polishing the jewellery.