buyers guide


Onyx can usually be cleaned in a steamer or ultrasonic cleaner, but the colour of chalcedony can sometimes change in extreme heat. Acids should be avoided and it should be stored away from other jewellery.

It is best to clean Onyx in warm, sudsy water, then rinse with clear water, wipe dry and leave to dry on a towel.

Caring for Onyx (Summary)

•    Store away from other jewellery
•    Clean in warm, soapy water
•    Rinse with clear water and leave on towel to dry