1. Self-cleaning with warm soapy water: Zircon is a hard material, and zircon necklaces can be self-cleaned with warm soapy water, but it is not recommended to clean this gem with ultrasonic wave and steam cleaner, which will destroy the color of the gem.

2. Take it to a jewelry store for cleaning: If you are not confident about your maintenance, you can take the necklace to a specialty store for cleaning. However, it is worth reminding that many jewelry stores use ultrasonic and steam cleaning machines for cleaning, which is not very good for gems, so it is recommended not to use these two methods for cleaning.

3. Buy a special cleaning solution for cleaning: Many jewelry stores sell this cleaning solution, and users of zircon necklaces can buy it for cleaning, and the cleaning effect is better.