What is the best way to clean my jewelry without harming it?
Soft cloth and mild soap is the best way to clean most precious or semi-precious jewellery. There is a machine called an ultrasonic cleaner that will help loosen dirt away from the piece but it can only be used on certain types of jewellery. Best to ask before you buy. For more: http://www.stonesandfindings.com/jewelry-making-articles/cleaning-gemstones