Crystal jewelry can range from a very simple setting to an elaborate wearable work of art.  A nice benefit that accompanies crystal jewelry is that you can re balance your personal energy.  Wearing crystals is a useful way to help maintain the body's energy level but the stone can only help you if your own energy is clean.  Place your jewelry on a crystal cluster at night to cleanse it or if you have had a difficult day cleanse the crystal with running water or in incense smoke for a minute.  If crystal jewelry isn't cleansed regularly, the stones cannot process unbalanced energies and may even reflect energies back into your auric field, making matters worse.  Crystal jewelry is best used when you need a little extra boost.  Wear only one or two stones at a time because more may confuse the energy message to the body.  Don't become dependent on your crystals.  Have a couple of days without wearing any from time to time.  Sometimes a stone needs to be somewhere particular on the body.  If you don't have a pocket in the appropriate place, use a small bag or pouch and safety pin to attach it securely to the inside of your clothing.  A stone at the solar plexus will influence how you use your store of energy and what you do with personal power.  A stone at the heart will affect your emotional state.  A stone placed between the heart and throat will help you define your space and needs.  A stone at the throat will aid your communication and artistic skills.  Crystal earrings can help to balance throat, neck and head energies.  Wearing gemstone rings will stimulate different meridian channels depending on which fingers they are worn on.  Source: Crystal Healing by Simon Lilly.