Here is a basic recipe for cleaning  jewellery    * 1 tbsp dishwashing detergent  * 1 tbsp baking soda  * 1 tbsp household ammonia  * 3 cups warm water    Combine ingredients in a bowl and mix well. Pour into a glass jar and cover tightly. Label jar for future use and keep out of reach of children. To use, soak jewellry in the solution for 1-10 minutes (depending on how tarnished it is). Swish intricate pieces in the solution to get into the cracks/crevices. Use a toothbrush or a well-washed...