To protect pearls

• Store pearls in a soft cloth sack, separate from metallic necklaces.
• Never clean pearls in an ultrasonic cleaner. Vibrations can shatter pearls, especially if the nacre is thin or cracked.
• Do not use chemical cleaners, especially any containing ammonia or bleach.
• Remove pearl jewellery before washing the dishes, doing any housework, or applying perfume or hair spray.
• Do not wear pearls in swimming pools with chlorinated water.
• Avoid contact with foods containing acids, for example, fruit juices and salad dressings.
• Expose pearls regularly to humid conditions. If stored in a safe, place a glass of water (or wet sponge) in the compartment with them.
• Wipe with a soft cloth after wearing. Wash occasionally in mild soapy water; contrary to popular belief, the acidic oils and perspiration from human skin can damage the surface of a pearl.
• Have pearls restrung periodically (once every two years), especially if worn frequently.
• Most jewellers use silk thread with knots tied between the pearls to prevent abrasion and ensure that all are not lost if the string is broken.

Pearls Melba offers a rethreading service.