Never use hot water when washing delicate china and crystal. If it's too hot for your hands, it's too hot for china and crystal, and sudden changes of temperature can cause dishes and glasses to crack. Fold a towel and place it in the bottom of the sink to act as a cushion for dishes and glasses. Fold a towel and place it in the rinse side of the sink.
Add a generous squirt of liquid dish soap to the wash water. Add 1 tablespoon of white vinegar to the wash water. The vinegar will cut any grease and water spots on crystal, and it's a natural and safe cleaner, so don't worry if you add more than a tablespoon of it to the water.
Dry gently, using a lint-free or linen cloth. Store stem-side down: storing cup-side down endangers the delicate rim of the glass. Hand-wash china and either dry with a towel or air-dry in a dish drain; just don't crowd pieces together.