Here are some more tips from www.barbieinablender.org:
Training Your Fine Jewelry:
The first thing you should do is to give your fine jewelry its own little space for when it is not being worn and train it to stay there. Jewelry items do not live or party well together. Much of the damage, other than wear, that is done to jewelry happens in jewelry boxes. Stones scratch each other and the metals around them.
Cleaning Your Fine Jewelry:
The best way to clean your fine jewelry is with a soft (used) toothbrush and a mild dish detergent. If the pieces are very dirty, you can soak them in detergent and water.
Any competent jeweler can polish items on occasion, but this process also removes small amounts of metal and so should be used sparingly.
Checking for Wear and Tear:
Over time, gold and silver will wear down. This can happen over months or years. This can be a problem for people who do certain kinds of work. The solution to this type of problem is the use of heavier metal in the prongs, the use of platinum for the setting or the use of a bezel setting to secure the stone. Prongs should be checked occasionally and if thin they should be replaced.


